Prosecution Insights
Last updated: May 29, 2026
Application No. 18/910,615

IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS, METHODS FOR THE SAME, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM

Non-Final OA §103
Filed
Oct 09, 2024
Priority
Sep 19, 2019 — JP 2019-170810 +3 more
Examiner
BOYLAN, JAMES T
Art Unit
2486
Tech Center
2400 — Computer Networks
Assignee
Canon Kabushiki Kaisha
OA Round
3 (Non-Final)
63%
Grant Probability
Moderate
3-4
OA Rounds
1y 1m
Est. Remaining
74%
With Interview

Examiner Intelligence

Grants 63% of resolved cases
63%
Career Allowance Rate
306 granted / 488 resolved
+4.7% vs TC avg
Moderate +12% lift
Without
With
+11.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
31 currently pending
Career history
525
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
87.5%
+47.5% vs TC avg
§102
3.2%
-36.8% vs TC avg
§112
5.9%
-34.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 488 resolved cases

Office Action

§103
DETAILED ACTION Response to Arguments Applicant’s arguments, see application, filed 12/09/2025, with respect to the specification objection, 112 rejections and double patenting rejection have been fully considered and are persuasive. The objection/rejections above have been withdrawn. Applicant’s arguments with respect to claims 1-3, 5-9 and 11-15 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument (i.e. Applicant argues that the Lim ‘396 reference does not teach the newly added limitations. However, the references Lim & Tanaka still read on the newly added limitations). Applicant's arguments filed 12/09/2025 have been fully considered but they are not persuasive. Applicant states that the provisional double patenting rejections are overcome due to the amendments. This is unclear. The co-pending applications have been amended with the same limitations. 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 . Priority Acknowledgment is made of applicant’s claim for foreign priority under 35 U.S.C. 119 (a)-(d). The certified copy has been filed in parent Application No. 17/695,638, filed on 03/30/2022. 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 1-3, 5-9 and 11-15 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-3, 5-6 and 8-9 of copending Application No. 18/910,566 in view of Lim (US 20220321885). Co-pending App. ‘566 does not claim: (a) a first element which is a 1st element in a predetermined scan order and which is an element of a difference value between an element at a 1st row and a 1st column of the first quantization matrix and element at a 1st row and a 1st column of the second quantization matrix; (b) a second element which is a 2nd element in the predetermined scan order and which is an element of a difference value between an element at a 2nd row and a 1st column of the first quantization matrix and an element at a 2nd row and a 1st column of the second quantization matrix; (c) a third element which is a 3rd element in the predetermined scan order and which is an element of a difference value between an element at a 1st row and 2nd column of the first quantization matrix and an element at a 1st row and a 2nd column of the second quantization matrix, and (a) encodes, into the scaling list data syntax structure, a difference value between (i) the element, corresponding to a 1st element in the predetermined scan order, at the 1st row and the 1st column of the first quantization matrix and (ii) a predetermined value and; (b) encodes, into the scaling list data syntax structure, a difference value between (i) the element, corresponding to a 2nd element in the predetermined scan order, at the 2nd row and the 1st column of the first quantization matrix and (ii) the element at the 1st row and the 1st column of the first quantization matrix; (c) encodes, into the scaling list data syntax structure, a difference value between (i) the element, corresponding to a 3rd element in the predetermined scan order, at the 1st row and the 2nd column of the first quantization matrix and (ii) the element at the 2nd row and the 1st column of the first quantization matrix; and (d) encodes, into the scaling list data syntax structure, a difference value between (i) an element, corresponding to a 4th element in the predetermined scan order, at the 3rd row and the 1st column of the first quantization matrix and (ii) the element at the 1st row and the 2nd column of the first quantization matrix. However, Lim does disclose inter and intra quantization matrix prediction mode (para. 1046), difference values by the scan method (para. 0694), and Fig. 65, diagonal scan. It would have been obvious to the person of ordinary skill in the art at the time of the effective filing date to modify the apparatus by copending Application No. 18/910,566 to add the teachings of Lim, in order to improve upon video quality [See Lim [0004]]. Claims 1-3, 5-9 and 11-15 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-3, 5-6 and 8-9 of copending Application No. 18/910,585 in view of Lim (US 20220321885). Please refer to the same rationale applied above in regards to the DP rejection in view of the co-pending App. No. ‘566. This is a provisional nonstatutory double patenting rejection. Claims 1-3, 5-9 and 11-15 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-4, 6-9 and 11-12 of copending Application No. 18/910,601 in view of Lim (US 20220321885). Please refer to the same rationale applied above in regards to the DP rejection in view of the ‘224 Patent. This is a provisional nonstatutory double patenting rejection. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claims 1-3, 5-9 and 11-15 are rejected under 35 U.S.C. 103 as being unpatentable over Lim et al. (herein after will be referred to as Lim) (US 20220321885) in view of Lim et al. (herein after will be referred to as Lim ‘396) (US 20150334396) and in further view of Tanaka (US 20150063447). Regarding claim 1, Lim discloses an image encoding apparatus comprising: a quantization unit configured to quantize transform coefficients in a block in an image, using a first quantization matrix, [See Lim [0024] Quantizing transform coefficients of a current block of a current picture based on the quantization matrix set. Also, see Fig. 1, quantization unit (140).] an encoding unit configured to encode the first quantization matrix, [See Lim [Fig. 1] Entropy encoding unit (150).] wherein in a case where a first mode is used to encode the first quantization matrix, the encoding unit encodes, into a scaling list data syntax structure, (i) information indicating that the first quantization matrix is the same as a second quantization matrix to be referenced and (ii) encodes information for specifying the second quantization matrix, [See Lim [1045] Quantization matrix copy mode. Also, see 1047. Also, see 1069-1073, syntax elements for flags are Golomb coded. Also, see 0472-0475, scaling_list_pred_mode flag.] wherein in a case where a second mode is used to encode the first quantization matrix, the encoding unit encodes, into the scaling list data syntax structure, the information for specifying the second quantization matrix, and encodes information use to derive a first one-dimensional matrix comprising of a plurality of elements comprising: (a) a first element which is a 1st element in a predetermined scan order and which is an element of a difference value between an element at a 1st row and a 1st column of the first quantization matrix and element at a 1st row and a 1st column of the second quantization matrix; (b) a second element which is a 2nd element in the predetermined scan order and which is an element of a difference value between an element at a 2nd row and a 1st column of the first quantization matrix and an element at a 2nd row and a 1st column of the second quantization matrix; (c) a third element which is a 3rd element in the predetermined scan order and which is an element of a difference value between an element at a 1st row and 2nd column of the first quantization matrix and an element at a 1st row and a 2nd column of the second quantization matrix, and [See Lim [1046] Inter-quantization matrix prediction mode. Also, see 1047. Also, see 1069-1073, syntax elements for flags are Golomb coded. Also, see 0472-0475, scaling_list_pred_mode flag. Also, see Fig. 65, diagonal scan and 0709 and/or 0692-0693, 1D coefficient array. Also, see 0694, difference values by the scan method.] wherein in a case where a third mode is used to encode the first quantization matrix, the encoding unit encodes a difference value of two consecutive elements in the predetermined scan order within the first quantization matrix so that the encoding unit; (a) encodes, into the scaling list data syntax structure, a difference value between (i) the element, corresponding to a 1st element in the predetermined scan order, at the 1st row and the 1st column of the first quantization matrix and (ii) a predetermined value and; (b) encodes, into the scaling list data syntax structure, a difference value between (i) the element, corresponding to a 2nd element in the predetermined scan order, at the 2nd row and the 1st column of the first quantization matrix and (ii) the element at the 1st row and the 1st column of the first quantization matrix; (c) encodes, into the scaling list data syntax structure, a difference value between (i) the element, corresponding to a 3rd element in the predetermined scan order, at the 1st row and the 2nd column of the first quantization matrix and (ii) the element at the 2nd row and the 1st column of the first quantization matrix; and (d) encodes, into the scaling list data syntax structure, a difference value between (i) an element, corresponding to a 4th element in the predetermined scan order, at the 3rd row and the 1st column of the first quantization matrix and (ii) the element at the 1st row and the 2nd column of the first quantization matrix, [See Lim [1046] Intra-quantization matrix DPCM mode. Also, see 1047. Also, see 0472-0475, scaling_list_pred_mode flag. Also, see 1069-1073, syntax elements for flags are Golomb coded. Also, see 0694, difference values by the scan method, and Fig. 65, diagonal scan. Also, see 0039, differential quantization matrix coefficient indicating a difference between a matrix coefficient of the current quantization matrix and a matrix coefficient of the reference quantization matrix.] wherein the encoding unit uses, as the second quantization matrix, a quantization matrix all elements of which are set as 16, [See Lim [Fig. 21] Default matrix having values of 16.] wherein a size of the second quantization matrix can only be 2x2, 4x4 or 8x8, [See Lim [1063-1064] The embodiments are applicable only when the size of the current block is equal to or less than 8x8. Also, see 0015, Quantization matrix is defined according to a size of a block.] wherein the second quantization matrix having a size of 2x2 can be applied to chroma blocks, and the second quantization matrix having a size of 2x2 is not applied to luma blocks, [See Lim [0494-0495] Quantization matrix having size of 2x2 is not used for luma, and quantization matrix having size of 2x2 is used for chroma.] wherein the second quantization matrix [See Lim [1063-1064] The embodiments are applicable only when the size of the current block is equal to or less than 8x8. Also, see 0015, Quantization matrix is defined according to a size of a block. Also, see 0619, quantization matrix having a size of 2x2, 4x4, or 8x8.] Lim does not explicitly disclose wherein a code amount of information representing that the first mode is used is less than a code amount of information representing that the second mode is used, wherein the code amount of information representing that the first mode is used is less than a code amount of information representing that the third mode is used, wherein the second quantization matrix However, Lim ‘396 does disclose wherein a code amount of information representing that the first mode is used is less than a code amount of information representing that the second mode is used, [See Lim ‘396 [0203] Scaling list pred mode flag is 0 when matrices are identical and copying is used, and scaling list pred mode flag is 1 when prediction is used. Also, see 0049, exp-Golmb coding.] It would have been obvious to the person of ordinary skill in the art at the time of the effective filing date to modify the apparatus by Lim to add the teachings of Lim ‘396, in order to improve upon coding efficiency [See Lim ‘386 [0005]]. Lim (modified by Lim ‘386) do not explicitly disclose wherein the code amount of information representing that the first mode is used is less than a code amount of information representing that the third mode is used, wherein the second quantization matrix quantization matrix However, Tanaka does disclose wherein the code amount of information representing that the first mode is used is less than a code amount of information representing that the third mode is used, [See Tanaka [0119-0123] 1st mode is 0, 2nd mode is 1 and 3rd mode is 2. Also, see 0195, Golomb coding.] wherein the second quantization matrix [See Tanaka [0182] Loops for every size and type of quantization matrix.] It would have been obvious to the person of ordinary skill in the art at the time of the effective filing date to modify the apparatus by Lim (modified by Lim ‘396) to add the teachings of Tanaka, in order to improve upon coding efficiency related to quantization matrices [See Tanaka [0009-0010]]. Regarding claim 2, Lim (modified by Lim ‘396 and Tanaka) disclose the apparatus of claim 1. Furthermore, Lim discloses wherein types of components of the blocks include a luma component and two chroma components, and transform coefficients of each component are quantized using the first quantization matrix corresponding to the component. [See Lim [Figs. 9-17] quantization matrices for luma/chroma.] Regarding claim 3, Lim (modified by Lim ‘396 and Tanaka) disclose the apparatus of claim 1. Furthermore, Lim discloses wherein the second quantization matrix is a quantization matrix which has already been encoded or a default quantization matrix all elements of which are 16. [See Lim [Fig. 21] Default matrix having values of 16.] Regarding claim 5, Lim (modified by Lim ‘396 and Tanaka) disclose the apparatus of claim 1. Furthermore, Lim discloses wherein the first quantization matrix and the second quantization matrix has the same size. [See Lim [0604] Having the same size.] Regarding claim 6, Lim (modified by Lim ‘396 and Tanaka) disclose the apparatus of claim 1. Furthermore, Lim discloses wherein a position of the 1st element in the predetermined scan order within the two dimensional matrix is a position at the 1st row and the 1st column of the two dimensional matrix, a position of the 2nd element in the predetermined scan order within the two dimensional matrix is a position at the 2nd row and the 1st column of the two dimensional matrix, a position of the 3rd element in the predetermined scan order within the two dimensional matrix is a position at the 1st row and the 2nd column of the two dimensional matrix, and a position of the 4th element in the predetermined scan order within the two dimensional matrix is a position at the 3rd row and the 1st column of the two dimensional matrix. [See Lim [0694] values by the scan method to align coefficients in a 2d quantization matrix in a 1D coefficient array, and Fig. 65, diagonal scan. Also, see 0039, differential quantization matrix coefficient indicating a difference between a matrix coefficient of the current quantization matrix and a matrix coefficient of the reference quantization matrix.] Regarding claim 7, Lim (modified by Lim ‘396 and Tanaka) disclose the apparatus of claim 1. Furthermore, Lim discloses wherein the plurality of elements comprises a fourth element which is a 4th element in the predetermined scan order and which is an element of a difference value between an element at a 3rd row and a 1st column of the first quantization matrix and an element at a 3rd row and a 1st column of the second quantization matrix. [See Lim [0694] values by the scan method to align coefficients in a 2d quantization matrix in a 1D coefficient array, and Fig. 65, diagonal scan. Also, see 0039, differential quantization matrix coefficient indicating a difference between a matrix coefficient of the current quantization matrix and a matrix coefficient of the reference quantization matrix.] Regarding claim 8, see examiners rejection for claim 1 which is analogous and applicable for the rejection of claim 8. Regarding claim 9, see examiners rejection for claim 3 which is analogous and applicable for the rejection of claim 9. Regarding claim 11, see examiners rejection for claim 5 which is analogous and applicable for the rejection of claim 11. Regarding claim 12, see examiners rejection for claim 6 which is analogous and applicable for the rejection of claim 12. Regarding claim 13, see examiners rejection for claim 7 which is analogous and applicable for the rejection of claim 13. Regarding claim 14, see examiners rejection for claim 1 which is analogous and applicable for the rejection of claim 14. Regarding claim 15, see examiners rejection for claim 1 which is analogous and applicable for the rejection of claim 15. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to JAMES T BOYLAN whose telephone number is (571)272-8242. The examiner can normally be reached Monday-Friday 7am-3pm. 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, JAMIE ATALA can be reached at 571-272-7384. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /JAMES T BOYLAN/Examiner, Art Unit 2486
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Prosecution Timeline

Oct 09, 2024
Application Filed
Sep 30, 2025
Non-Final Rejection mailed — §103
Dec 09, 2025
Response Filed
Jan 07, 2026
Final Rejection mailed — §103
Feb 26, 2026
Response after Non-Final Action
Apr 01, 2026
Request for Continued Examination
Apr 14, 2026
Response after Non-Final Action
May 26, 2026
Non-Final Rejection mailed — §103 (current)

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Prosecution Projections

3-4
Expected OA Rounds
63%
Grant Probability
74%
With Interview (+11.6%)
2y 9m (~1y 1m remaining)
Median Time to Grant
High
PTA Risk
Based on 488 resolved cases by this examiner. Grant probability derived from career allowance rate.

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