Prosecution Insights
Last updated: July 17, 2026
Application No. 19/269,579

SIGNALING OF REFERENCE PICTURE RESAMPLING WITH CONSTANT WINDOW SIZE IN VIDEO BITSTREAM

Non-Final OA §102§DP
Filed
Jul 15, 2025
Priority
Sep 20, 2019 — provisional 62/903,601 +3 more
Examiner
WONG, ALLEN C
Art Unit
Tech Center
Assignee
Tencent Technology (Shenzhen) Company Limited
OA Round
1 (Non-Final)
83%
Grant Probability
Favorable
1-2
OA Rounds
1y 11m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allowance Rate
678 granted / 814 resolved
+23.3% vs TC avg
Moderate +12% lift
Without
With
+11.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
24 currently pending
Career history
845
Total Applications
across all art units

Statute-Specific Performance

§101
5.2%
-34.8% vs TC avg
§103
59.7%
+19.7% vs TC avg
§102
5.6%
-34.4% vs TC avg
§112
4.5%
-35.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 814 resolved cases

Office Action

§102 §DP
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Information Disclosure Statement The information disclosure statement (IDS) submitted on 7/15/25 is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement has been considered by the examiner. Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claims 15-20 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Kadono (US 2004/0076237). Regarding claim 15, Kadono discloses a non-transitory computer-readable medium storing a bitstream that is generated by an encoding process (paragraph [257], Kadono discloses a computer readable data medium such as CD-ROM, floppy disk, hard disk drive, etc.), the bitstream comprising an encoding of a video sequence, the encoding of the video sequence comprising a current picture, a first flag, and a second flag (paragraph [257], Kadono discloses a computer readable data medium such as CD-ROM, floppy disk, hard disk drive, etc.), and wherein the encoding process comprises: determining the first flag indicating whether a constant picture size is used in a video sequence including the current picture; based on the first flag indicating that the constant picture size is used, encoding the current picture without reference picture resampling; based on the first flag indicating that the constant picture size is not used, determining the second flag indicating whether a conformance window size is to be signaled; based on the second flag indicating that the conformance window size is signaled: determining the conformance window size, determining a resampling ratio between the current picture and a reference picture based on the conformance window size; and encoding the current picture based on reference picture resampling using the resampling ratio (paragraph [257], Kadono discloses a computer readable data medium such as CD-ROM, floppy disk, hard disk drive, etc.). Note claim 15 is directed to “a non-transitory computer-readable medium’'. The non-transitory computer-readable medium without functional relationship between the computer readable medium and the rest of recited features of the claim “…storing a bitstream that is generated by an encoding process, the bitstream comprising an encoding of a video sequence, the encoding of the video sequence comprising a current picture, a first flag, and a second flag, and wherein the encoding process comprises: determining the first flag indicating whether a constant picture size is used in a video sequence including the current picture; based on the first flag indicating that the constant picture size is used, encoding the current picture without reference picture resampling; based on the first flag indicating that the constant picture size is not used, determining the second flag indicating whether a conformance window size is to be signaled; based on the second flag indicating that the conformance window size is signaled: determining the conformance window size, determining a resampling ratio between the current picture and a reference picture based on the conformance window size; and encoding the current picture based on reference picture resampling using the resampling ratio”. When determining the scope of the claim, the above features of claim 18 were not given patentable weight. See MPEP 2111.05 (III). Thus, the computer-readable data recording medium such as CD-ROM, floppy disk, or a hard disk drive disclosed in Kadono meets Applicant’s claim 15. Regarding claim 16, Kadono discloses the non-transitory computer-readable medium of claim 15 (paragraph [257], Kadono discloses a computer readable data medium such as CD-ROM, floppy disk, hard disk drive, etc.), wherein the conformance window size is signaled as at least one offset distance from a border of the current picture (paragraph [257], Kadono discloses a computer readable data medium such as CD-ROM, floppy disk, hard disk drive, etc.). Since claim 16 is dependent on claim 15, the reasons for rejecting claim 16 also apply to claim 15 because the claim 16 is directed to “a non-transitory computer-readable medium’'. The non-transitory computer-readable recording medium without functional relationship between the computer readable medium and the rest of recited features of the claim “…storing a bitstream that is generated by an encoding process, the bitstream comprising an encoding of a video sequence, the encoding of the video sequence comprising a current picture, a first flag, and a second flag, and wherein the encoding process comprises: determining the first flag indicating whether a constant picture size is used in a video sequence including the current picture; based on the first flag indicating that the constant picture size is used, encoding the current picture without reference picture resampling; based on the first flag indicating that the constant picture size is not used, determining the second flag indicating whether a conformance window size is to be signaled; based on the second flag indicating that the conformance window size is signaled: determining the conformance window size, determining a resampling ratio between the current picture and a reference picture based on the conformance window size; and encoding the current picture based on reference picture resampling using the resampling ratio”. Thus, for similar reasons as stated above for claim 15, the claim 16 limitation “…wherein the conformance window size is signaled as at least one offset distance from a border of the current picture” is also devoid of functional relationship between the computer readable medium and the rest of recited features of the claim 16. When determining the scope of the claim, the above features of claim 16 were not given patentable weight. See MPEP 2111.05 (III). Thus, the computer-readable data recording medium such as CD-ROM, floppy disk, or a hard disk drive disclosed in Kadono meets Applicant’s claim 16. Regarding claim 17, Kadono discloses the non-transitory computer-readable medium of claim 15 (paragraph [257], Kadono discloses a computer readable data medium such as CD-ROM, floppy disk, hard disk drive, etc.), wherein the first flag is signaled in a sequence parameter set (SPS), and wherein the second flag is signaled in one from among the SPS and a picture parameter set (paragraph [257], Kadono discloses a computer readable data medium such as CD-ROM, floppy disk, hard disk drive, etc.). Since claim 17 is dependent on claim 15, the reasons for rejecting claim 17 also apply to claim 15 because the claim 17 is directed to “a non-transitory computer-readable medium’'. The non-transitory computer-readable recording medium without functional relationship between the computer readable medium and the rest of recited features of the claim “…storing a bitstream that is generated by an encoding process, the bitstream comprising an encoding of a video sequence, the encoding of the video sequence comprising a current picture, a first flag, and a second flag, and wherein the encoding process comprises: determining the first flag indicating whether a constant picture size is used in a video sequence including the current picture; based on the first flag indicating that the constant picture size is used, encoding the current picture without reference picture resampling; based on the first flag indicating that the constant picture size is not used, determining the second flag indicating whether a conformance window size is to be signaled; based on the second flag indicating that the conformance window size is signaled: determining the conformance window size, determining a resampling ratio between the current picture and a reference picture based on the conformance window size; and encoding the current picture based on reference picture resampling using the resampling ratio”. Thus, for similar reasons as stated above for claim 15, the claim 17 limitation “…wherein the first flag is signaled in a sequence parameter set (SPS), and wherein the second flag is signaled in one from among the SPS and a picture parameter set (PPS)” is also devoid of functional relationship between the computer readable medium and the rest of recited features of the claim 17. When determining the scope of the claim, the above features of claim 17 were not given patentable weight. See MPEP 2111.05 (III). Thus, the computer-readable data recording medium such as CD-ROM, floppy disk, or a hard disk drive disclosed in Kadono meets Applicant’s claim 17. Regarding claim 18, Kadono discloses the non-transitory computer-readable medium of claim 15 (paragraph [257], Kadono discloses a computer readable data medium such as CD-ROM, floppy disk, hard disk drive, etc.), wherein the second flag is signaled in the SPS, and indicates whether SPS conformance window parameters are signaled in the SPS (paragraph [257], Kadono discloses a computer readable data medium such as CD-ROM, floppy disk, hard disk drive, etc.). Since claim 18 is dependent on claim 15, the reasons for rejecting claim 18 also apply to claim 15 because the claim 18 is directed to “a non-transitory computer-readable medium’'. The non-transitory computer-readable recording medium without functional relationship between the computer readable medium and the rest of recited features of the claim “…storing a bitstream that is generated by an encoding process, the bitstream comprising an encoding of a video sequence, the encoding of the video sequence comprising a current picture, a first flag, and a second flag, and wherein the encoding process comprises: determining the first flag indicating whether a constant picture size is used in a video sequence including the current picture; based on the first flag indicating that the constant picture size is used, encoding the current picture without reference picture resampling; based on the first flag indicating that the constant picture size is not used, determining the second flag indicating whether a conformance window size is to be signaled; based on the second flag indicating that the conformance window size is signaled: determining the conformance window size, determining a resampling ratio between the current picture and a reference picture based on the conformance window size; and encoding the current picture based on reference picture resampling using the resampling ratio”. Thus, for similar reasons as stated above for claim 15, the claim 18 limitation “…wherein the second flag is signaled in the SPS, and indicates whether SPS conformance window parameters are signaled in the SPS” is also devoid of functional relationship between the computer readable medium and the rest of recited features of the claim 18. When determining the scope of the claim, the above features of claim 18 were not given patentable weight. See MPEP 2111.05 (III). Thus, the computer-readable data recording medium such as CD-ROM, floppy disk, or a hard disk drive disclosed in Kadono meets Applicant’s claim 18. Regarding claim 19, Kadono discloses the non-transitory computer-readable medium of claim 18 (paragraph [257], Kadono discloses a computer readable data medium such as CD-ROM, floppy disk, hard disk drive, etc.), wherein the bitstream further comprises a third flag, and wherein the encoding process further comprises: based on the first flag indicating that a picture size is not constant, determining a third flag indicating whether PPS conformance window parameters are signaled in the PPS (paragraph [257], Kadono discloses a computer readable data medium such as CD-ROM, floppy disk, hard disk drive, etc.). Since claim 19 is dependent on claim 15, the reasons for rejecting claim 19 also apply to claim 15 because the claim 19 is directed to “a non-transitory computer-readable medium’'. The non-transitory computer-readable recording medium without functional relationship between the computer readable medium and the rest of recited features of the claim “…storing a bitstream that is generated by an encoding process, the bitstream comprising an encoding of a video sequence, the encoding of the video sequence comprising a current picture, a first flag, and a second flag, and wherein the encoding process comprises: determining the first flag indicating whether a constant picture size is used in a video sequence including the current picture; based on the first flag indicating that the constant picture size is used, encoding the current picture without reference picture resampling; based on the first flag indicating that the constant picture size is not used, determining the second flag indicating whether a conformance window size is to be signaled; based on the second flag indicating that the conformance window size is signaled: determining the conformance window size, determining a resampling ratio between the current picture and a reference picture based on the conformance window size; and encoding the current picture based on reference picture resampling using the resampling ratio”. Thus, for similar reasons as stated above for claim 15, the claim 19 limitation “…wherein the bitstream further comprises a third flag, and wherein the encoding process further comprises: based on the first flag indicating that a picture size is not constant, determining a third flag indicating whether PPS conformance window parameters are signaled in the PPS” is also devoid of functional relationship between the computer readable medium and the rest of recited features of the claim 19. When determining the scope of the claim, the above features of claim 19 were not given patentable weight. See MPEP 2111.05 (III). Thus, the computer-readable data recording medium such as CD-ROM, floppy disk, or a hard disk drive disclosed in Kadono meets Applicant’s claim 19. Regarding claim 20, Kadono discloses the non-transitory computer-readable medium of claim 19 (paragraph [257], Kadono discloses a computer readable data medium such as CD-ROM, floppy disk, hard disk drive, etc.), wherein based on the second flag indicating that the SPS conformance window parameters are signaled in the SPS, and the third flag indicating that the PPS conformance window parameters are not signaled in the PPS, the conformance window size is determined based on the SPS conformance window parameters (paragraph [257], Kadono discloses a computer readable data medium such as CD-ROM, floppy disk, hard disk drive, etc.). Since claim 20 is dependent on claim 15, the reasons for rejecting claim 20 also apply to claim 15 because the claim 20 is directed to “a non-transitory computer-readable medium’'. The non-transitory computer-readable recording medium without functional relationship between the computer readable medium and the rest of recited features of the claim “…storing a bitstream that is generated by an encoding process, the bitstream comprising an encoding of a video sequence, the encoding of the video sequence comprising a current picture, a first flag, and a second flag, and wherein the encoding process comprises: determining the first flag indicating whether a constant picture size is used in a video sequence including the current picture; based on the first flag indicating that the constant picture size is used, encoding the current picture without reference picture resampling; based on the first flag indicating that the constant picture size is not used, determining the second flag indicating whether a conformance window size is to be signaled; based on the second flag indicating that the conformance window size is signaled: determining the conformance window size, determining a resampling ratio between the current picture and a reference picture based on the conformance window size; and encoding the current picture based on reference picture resampling using the resampling ratio”. Thus, for similar reasons as stated above for claim 15, the claim 20 limitation “…wherein based on the second flag indicating that the SPS conformance window parameters are signaled in the SPS, and the third flag indicating that the PPS conformance window parameters are not signaled in the PPS, the conformance window size is determined based on the SPS conformance window parameters” is also devoid of functional relationship between the computer readable medium and the rest of recited features of the claim 20. When determining the scope of the claim, the above features of claim 20 were not given patentable weight. See MPEP 2111.05 (III). Thus, the computer-readable data recording medium such as CD-ROM, floppy disk, or a hard disk drive disclosed in Kadono meets Applicant’s claim 20. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 1-20 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-14 of U.S. Patent No. 12,375,692 in view of Seregin (US 2021/0051341). Claim 1 of present Application ‘579 is similar to claim 1 of Patent ‘692. Peruse the table below. Claim 1 of Patent ‘692 does not disclose "...generating a bitstream of visual media data according to an encoding process, the bitstream of the visual media data comprising an encoding of a video sequence, the encoding of the video sequence comprising a current picture, a first flag, and a second flag". However, Seregin teaches generating a bitstream of visual media data according to an encoding process (paragraph [63], Seregin discloses video encoder for encoding a video bitstream, wherein the video bitstream comprises a sequence of pictures), the bitstream of the visual media data comprising an encoding of a video sequence (paragraph [63], Seregin discloses video encoder for encoding a video bitstream, wherein the video bitstream comprises a sequence of pictures), the encoding of the video sequence comprising a current picture (paragraph [150], Seregin discloses the video sequence of images comprise a current picture, wherein paragraph [63], Seregin discloses video encoder for encoding a video bitstream, wherein the video bitstream comprises a sequence of pictures), a first flag (paragraph [169], Seregin's table 3 discloses first flag for indicating conformance window), and a second flag (paragraph [169], Seregin's table 3 discloses second flag for indicating scaling window). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to combine the teachings of claim 1 of Patent ‘692 and Seregin together as a whole for improving video compression accuracy while maintaining high image quality. Claim 2 of present Application ‘579 is similar to claim 2 of Patent ‘692. Thus, claim 2 of present Application ‘579 is anticipated by claim 2 of Patent ‘692. Claim 3 of present Application ‘579 is similar to claim 3 of Patent ‘692. Thus, claim 3 of present Application ‘579 is anticipated by claim 3 of Patent ‘692. Claim 4 of present Application ‘579 is similar to claim 4 of Patent ‘692. Thus, claim 4 of present Application ‘579 is anticipated by claim 4 of Patent ‘692. Claim 5 of present Application ‘579 is similar to claim 5 of Patent ‘692. Thus, claim 5 of present Application ‘579 is anticipated by claim 5 of Patent ‘692. Claim 6 of present Application ‘579 is similar to claim 6 of Patent ‘692. Thus, claim 6 of present Application ‘579 is anticipated by claim 6 of Patent ‘692. Claim 7 of present Application ‘579 is similar to claim 7 of Patent ‘692. Thus, claim 7 of present Application ‘579 is anticipated by claim 7 of Patent ‘692. Claim 8 of present Application ‘579 is similar to claim 8 of Patent ‘692. Peruse the table below. Claim 8 of Patent ‘692 does not disclose "... the bitstream of the visual media data comprising an encoding of a video sequence, the encoding of the video sequence comprising a current picture, a first flag, and a second flag”. However, Seregin teaches the bitstream of the visual media data comprising an encoding of a video sequence (paragraph [63], Seregin discloses video encoder for encoding a video bitstream, wherein the video bitstream comprises a sequence of pictures), the encoding of the video sequence comprising a current picture (paragraph [150], Seregin discloses the video sequence of images comprise a current picture, wherein paragraph [63], Seregin discloses video encoder for encoding a video bitstream, wherein the video bitstream comprises a sequence of pictures), a first flag (paragraph [169], Seregin's table 3 discloses first flag for indicating conformance window), and a second flag (paragraph [169], Seregin's table 3 discloses second flag for indicating scaling window). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to combine the teachings of claim 8 of Patent ‘692 and Seregin together as a whole for improving video compression accuracy while maintaining high image quality. Claim 9 of present Application ‘579 is similar to claim 9 of Patent ‘692. Thus, claim 9 of present Application ‘579 is anticipated by claim 9 of Patent ‘692. Claim 10 of present Application ‘579 is similar to claim 10 of Patent ‘692. Thus, claim 10 of present Application ‘579 is anticipated by claim 10 of Patent ‘692. Claim 11 of present Application ‘579 is similar to claim 11 of Patent ‘692. Thus, claim 11 of present Application ‘579 is anticipated by claim 11 of Patent ‘692. Claim 12 of present Application ‘579 is similar to claim 12 of Patent ‘692. Thus, claim 12 of present Application ‘579 is anticipated by claim 12 of Patent ‘692. Claim 13 of present Application ‘579 is similar to claim 13 of Patent ‘692. Thus, claim 13 of present Application ‘579 is anticipated by claim 13 of Patent ‘692. Claim 14 of present Application ‘579 is similar to claim 14 of Patent ‘692. Thus, claim 14 of present Application ‘579 is anticipated by claim 14 of Patent ‘692. Claim 15 of present Application ‘579 is similar to claim 1 of Patent ‘692. Peruse the table below. Claim 1 of Patent ‘692 does not disclose "... the bitstream comprising an encoding of a video sequence, the encoding of the video sequence comprising a current picture, a first flag, and a second flag”. However, Seregin teaches the bitstream comprising an encoding of a video sequence (paragraph [63], Seregin discloses video encoder for encoding a video bitstream, wherein the video bitstream comprises a sequence of pictures), the encoding of the video sequence comprising a current picture (paragraph [150], Seregin discloses the video sequence of images comprise a current picture, wherein paragraph [63], Seregin discloses video encoder for encoding a video bitstream, wherein the video bitstream comprises a sequence of pictures), a first flag (paragraph [169], Seregin's table 3 discloses first flag for indicating conformance window), and a second flag (paragraph [169], Seregin's table 3 discloses second flag for indicating scaling window). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to combine the teachings of claim 1 of Patent ‘692 and Seregin together as a whole for improving video compression accuracy while maintaining high image quality. Claim 16 of present Application ‘579 is similar to claim 2 of Patent ‘692. Thus, claim 16 of present Application ‘579 is anticipated by claim 2 of Patent ‘692. Claim 17 of present Application ‘579 is similar to claim 3 of Patent ‘692. Thus, claim 17 of present Application ‘579 is anticipated by claim 3 of Patent ‘692. Claim 18 of present Application ‘579 is similar to claim 4 of Patent ‘692. Thus, claim 18 of present Application ‘579 is anticipated by claim 4 of Patent ‘692. Claim 19 of present Application ‘579 is similar to claim 5 of Patent ‘692. Thus, claim 19 of present Application ‘579 is anticipated by claim 5 of Patent ‘692. Claim 20 of present Application ‘579 is similar to claim 6 of Patent ‘692. Thus, claim 20 of present Application ‘579 is anticipated by claim 6 of Patent ‘692. Peruse table below. Present Application 19/269,579 US Patent No. 12,375,692 Claim 1. A method of encoding a video bitstream using at least one processor, the method comprising: generating a bitstream of visual media data according to an encoding process, the bitstream of the visual media data comprising an encoding of a video sequence, the encoding of the video sequence comprising a current picture, a first flag, and a second flag, and wherein the encoding process comprises: determining the first flag indicating whether a constant picture size is used in a video sequence including the current picture; based on the first flag indicating that the constant picture size is used, encoding the current picture without reference picture resampling; based on the first flag indicating that the constant picture size is not used, determining the second flag indicating whether a conformance window size is to be signaled; based on the second flag indicating that the conformance window size is signaled: determining the conformance window size, determining a resampling ratio between the current picture and a reference picture based on the conformance window size; and encoding the current picture based on reference picture resampling using the resampling ratio. Claim 1. A method of encoding a video bitstream using at least one processor, the method comprising: determining a first flag indicating whether a constant picture size is used in a video sequence including a current picture; based on the first flag indicating that the constant picture size is used, encoding the current picture without performing reference picture resampling; based on the first flag indicating that the constant picture size is not used, determining a second flag indicating whether a conformance window size is to be signaled; based on the second flag indicating that the conformance window size is signaled: determining the conformance window size, determining a resampling ratio between the current picture and a reference picture based on the conformance window size, and performing the reference picture resampling on the current picture using the resampling ratio. Claim 2. The method of claim 1, wherein the conformance window size is signaled as at least one offset distance from a border of the current picture. Claim 2. The method of claim 1, wherein the conformance window size is signaled as at least one offset distance from a border of the current picture. Claim 3. The method of claim 1, wherein the first flag is signaled in a sequence parameter set (SPS), and wherein the second flag is signaled in one from among the SPS and a picture parameter set (PPS). Claim 3. The method of claim 1, wherein the first flag is signaled in a sequence parameter set (SPS), and wherein the second flag is signaled in one from among the SPS and a picture parameter set (PPS). Claim 4. The method of claim 1, wherein the second flag is signaled in the SPS, and indicates whether SPS conformance window parameters are signaled in the SPS. Claim 4. The method of claim 1, wherein the second flag is signaled in the SPS, and indicates whether SPS conformance window parameters are signaled in the SPS. Claim 5. The method of claim 4, wherein the bitstream further comprises a third flag, and wherein the encoding process further comprises: based on the first flag indicating that a picture size is not constant, determining the third flag indicating whether PPS conformance window parameters are signaled in the PPS. Claim 5. The method of claim 4, further comprising, based on the first flag indicating that a picture size is not constant, determining a third flag indicating whether PPS conformance window parameters are signaled in the PPS. Claim 6. The method of claim 5, wherein based on the second flag indicating that the SPS conformance window parameters are signaled in the SPS, and the third flag indicating that the PPS conformance window parameters are not signaled in the PPS, the conformance window size is determined based on the SPS conformance window parameters. Claim 6. The method of claim 5, wherein based on the second flag indicating that the SPS conformance window parameters are signaled in the SPS, and the third flag indicating that the PPS conformance window parameters are not signaled in the PPS, the conformance window size is determined based on the SPS conformance window parameters. Claim 7. The method of claim 5, wherein based on the second flag indicating that the SPS conformance window parameters are not signaled in the SPS, and the third flag indicating that the PPS conformance window parameters are signaled in the PPS, the conformance window size is determined based on the PPS conformance window parameters. Claim 7. The method of claim 5, wherein based on the second flag indicating that the SPS conformance window parameters are not signaled in the SPS, and the third flag indicating that the PPS conformance window parameters are signaled in the PPS, the conformance window size is determined based on the PPS conformance window parameters. Claim 8. A method of decoding a video bitstream using at least one processor, the method comprising: decoding a bitstream of visual media data according to a decoding process, the bitstream of the visual media data comprising an encoding of a video sequence, the encoding of the video sequence comprising a current picture, a first flag, and a second flag, and wherein the decoding process comprises: determining the first flag indicating whether a constant picture size is used in the encoding of the video sequence; based on the first flag indicating that the constant picture size is used, decoding the current picture without reference picture resampling; based on the first flag indicating that the constant picture size is not used, determining the second flag indicating whether a conformance window size is signaled; based on the second flag indicating that the conformance window size is signaled: determining the conformance window size, determining a resampling ratio between the current picture and a reference picture based on the conformance window size; and decoding the current picture based on reference picture resampling using the resampling ratio. Claim 8. A method of decoding a video bitstream using at least one processor, the method comprising: determining a first flag indicating whether a constant picture size is used in a coded video sequence including a current picture; based on the first flag indicating that the constant picture size is used, decoding the current picture without performing reference picture resampling; based on the first flag indicating that the constant picture size is not used, determining a second flag indicating whether a conformance window size is signaled; based on the second flag indicating that the conformance window size is signaled: determining the conformance window size, determining a resampling ratio between the current picture and a reference picture based on the conformance window size, and performing the reference picture resampling on the current picture using the resampling ratio. Claim 9. The method of claim 8, wherein the conformance window size is signaled as at least one offset distance from a border of the current picture. Claim 9. The method of claim 8, wherein the conformance window size is signaled as at least one offset distance from a border of the current picture. Claim 10. The method of claim 8, wherein the first flag is signaled in a sequence parameter set (SPS), and wherein the second flag is signaled in one from among the SPS and a picture parameter set (PPS). Claim 10. The method of claim 8, wherein the first flag is signaled in a sequence parameter set (SPS), and wherein the second flag is signaled in one from among the SPS and a picture parameter set (PPS). Claim 11. The method of claim 8, wherein the second flag is signaled in the SPS, and indicates whether SPS conformance window parameters are signaled in the SPS. Claim 11. The method of claim 8, wherein the second flag is signaled in the SPS, and indicates whether SPS conformance window parameters are signaled in the SPS. Claim 12. The method of claim 11, wherein the bitstream further comprises a third flag, and wherein the decoding process further comprises: based on the first flag indicating that a picture size is not constant, determining the third flag indicating whether PPS conformance window parameters are signaled in the PPS. Claim 12. The method of claim 11, further comprising, based on the first flag indicating that a picture size is not constant, determining a third flag indicating whether PPS conformance window parameters are signaled in the PPS. Claim 13. The method of claim 12, wherein based on the second flag indicating that the SPS conformance window parameters are signaled in the SPS, and the third flag indicating that the PPS conformance window parameters are not signaled in the PPS, the conformance window size is determined based on the SPS conformance window parameters. Claim 13. The method of claim 12, wherein based on the second flag indicating that the SPS conformance window parameters are signaled in the SPS, and the third flag indicating that the PPS conformance window parameters are not signaled in the PPS, the conformance window size is determined based on the SPS conformance window parameters. Claim 14. The method of claim 12, wherein based on the second flag indicating that the SPS conformance window parameters are not signaled in the SPS, and the third flag indicating that the PPS conformance window parameters are signaled in the PPS, the conformance window size is determined based on the PPS conformance window parameters. Claim 14. The method of claim 12, wherein based on the second flag indicating that the SPS conformance window parameters are not signaled in the SPS, and the third flag indicating that the PPS conformance window parameters are signaled in the PPS, the conformance window size is determined based on the PPS conformance window parameters. Claim 15. A non-transitory computer-readable medium storing a bitstream that is generated by an encoding process, the bitstream comprising an encoding of a video sequence, the encoding of the video sequence comprising a current picture, a first flag, and a second flag, and wherein the encoding process comprises: determining the first flag indicating whether a constant picture size is used in a video sequence including the current picture; based on the first flag indicating that the constant picture size is used, encoding the current picture without reference picture resampling; based on the first flag indicating that the constant picture size is not used, determining the second flag indicating whether a conformance window size is to be signaled; based on the second flag indicating that the conformance window size is signaled: determining the conformance window size, determining a resampling ratio between the current picture and a reference picture based on the conformance window size; and encoding the current picture based on reference picture resampling using the resampling ratio. Claim 1. A method of encoding a video bitstream using at least one processor, the method comprising: determining a first flag indicating whether a constant picture size is used in a video sequence including a current picture; based on the first flag indicating that the constant picture size is used, encoding the current picture without performing reference picture resampling; based on the first flag indicating that the constant picture size is not used, determining a second flag indicating whether a conformance window size is to be signaled; based on the second flag indicating that the conformance window size is signaled: determining the conformance window size, determining a resampling ratio between the current picture and a reference picture based on the conformance window size, and performing the reference picture resampling on the current picture using the resampling ratio. Claim 16. The non-transitory computer-readable medium of claim 15, wherein the conformance window size is signaled as at least one offset distance from a border of the current picture. Claim 2. The method of claim 1, wherein the conformance window size is signaled as at least one offset distance from a border of the current picture. Claim 17. The non-transitory computer-readable medium of claim 15, wherein the first flag is signaled in a sequence parameter set (SPS), and wherein the second flag is signaled in one from among the SPS and a picture parameter set (PPS). Claim 3. The method of claim 1, wherein the first flag is signaled in a sequence parameter set (SPS), and wherein the second flag is signaled in one from among the SPS and a picture parameter set (PPS). Claim 18. The non-transitory computer-readable medium of claim 15, wherein the second flag is signaled in the SPS, and indicates whether SPS conformance window parameters are signaled in the SPS. Claim 4. The method of claim 1, wherein the second flag is signaled in the SPS, and indicates whether SPS conformance window parameters are signaled in the SPS. Claim 19. The non-transitory computer-readable medium of claim 18, wherein the bitstream further comprises a third flag, and wherein the encoding process further comprises: based on the first flag indicating that a picture size is not constant, determining a third flag indicating whether PPS conformance window parameters are signaled in the PPS. Claim 5. The method of claim 4, further comprising, based on the first flag indicating that a picture size is not constant, determining a third flag indicating whether PPS conformance window parameters are signaled in the PPS. Claim 20. The non-transitory computer-readable medium of claim 19, wherein based on the second flag indicating that the SPS conformance window parameters are signaled in the SPS, and the third flag indicating that the PPS conformance window parameters are not signaled in the PPS, the conformance window size is determined based on the SPS conformance window parameters. Claim 6. The method of claim 5, wherein based on the second flag indicating that the SPS conformance window parameters are signaled in the SPS, and the third flag indicating that the PPS conformance window parameters are not signaled in the PPS, the conformance window size is determined based on the SPS conformance window parameters. Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to ALLEN C WONG whose telephone number is (571)272-7341. The examiner can normally be reached on Flex Monday-Thursday 9:30am-7:30pm. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Sath V Perungavoor can be reached on 571-272-7455. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /ALLEN C WONG/Primary Examiner, Art Unit 2488
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Prosecution Timeline

Jul 15, 2025
Application Filed
Jun 26, 2026
Non-Final Rejection mailed — §102, §DP (current)

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Prosecution Projections

1-2
Expected OA Rounds
83%
Grant Probability
95%
With Interview (+11.6%)
2y 11m (~1y 11m remaining)
Median Time to Grant
Low
PTA Risk
Based on 814 resolved cases by this examiner. Grant probability derived from career allowance rate.

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