Prosecution Insights
Last updated: July 17, 2026
Application No. 18/900,038

METHOD AND APPARATUS FOR VIDEO CODING USING ADAPTIVE MULTIPLE TRANSFORM SELECTION

Non-Final OA §102§OTHER§Other
Filed
Sep 27, 2024
Priority
Mar 28, 2022 — RE 10-2022-0037971 +2 more
Examiner
BECK, LERON
Art Unit
2487
Tech Center
2400 — Computer Networks
Assignee
Ewha University - Industry Collaboration Foundation
OA Round
2 (Non-Final)
80%
Grant Probability
Favorable
2-3
OA Rounds
9m
Est. Remaining
91%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allowance Rate
689 granted / 865 resolved
+21.7% vs TC avg
Moderate +11% lift
Without
With
+11.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
37 currently pending
Career history
927
Total Applications
across all art units

Statute-Specific Performance

§101
1.3%
-38.7% vs TC avg
§103
84.2%
+44.2% vs TC avg
§102
2.5%
-37.5% vs TC avg
§112
1.4%
-38.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 865 resolved cases

Office Action

§102 §OTHER §Other
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 . Status of Claims 2. This is a final action on the merits in response to the reply received 2/2/2026. Response to Arguments Applicant’s arguments have been considered but are not persuasive. Applicant argues that Koo does not disclose varying the number of transform candidates depending on a block’s characteristics, as claimed in claim 1. The examiner notes that there is nothing in claim 1 that requires varying the number of transform candidates depending on a block’s characteristics. Koo discloses selecting kernels based on a predetermined number of transform candidates included in the selected multiple transform selection group in fig. 8. In addition, Koo discloses wheren the predetermined number is determined based on a value of inverse quantized residuals in [0153-0154]). Claim Rejections - 35 USC § 102 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. Claim(s) 1-14 are rejected under 35 U.S.C. 102A1 as being anticipated by US 20200304791 A1-Koo et al (Hereinafter referred to as “Koo”). Regarding claim 1, Koo discloses a method performed by a video decoding device for decoding a current block (Fig. 2), the method comprising: obtaining a multiple-transform-selection index from a bitstream ([0141]; [0151]) and obtaining inverse-quantized residual signals of the current block from the bitstream ([0075-0076]); composing a plurality of multiple-transform-selection groups for the current block (Fig 8 shows multiple groups), wherein each of multiple-transform-selection groups comprises one or more transforms (Fig. 8 shows at least one transform in each group); selecting a multiple-transform-selection group from the multiple-transform- selection groups ([0129], wherein group may be determined; [0131, wherein groups may be selected); deriving a transform kernel from the multiple-transform-selection group by using the multiple-transform-selection index ([0134-0135]; [0149]); and generating inverse-transformed residual signals by inversely transforming the inverse-quantized residual signals by using the transform kernel ([0075-0076]; [0248]). wherein deriving the transform kernel is performed based on selecting one transform kernel among a predetermined number of transform candidates included in the selected multiple-transform-selection group (Fig 8, [0133-0136]), wherein the predetermined number is determined based on a value of the inverse-quantized residual signals ([0153-0154]). . Regarding claim 2, Koo discloses the method of claim 1, wherein obtaining the inverse-quantized residual signals comprises: decoding quantized residual signals from the bitstream ([0270], decoding inverse quantization); and generating the inverse-quantized residual signals inversely quantizing the quantized residual signals ([0276]). Regarding claim 3, Koo discloses the method of claim 1, wherein each of the multiple-transform-selection groups comprises a primary transform ([0098-0099]). Regarding claim 4, Koo discloses the method of claim 1, wherein the one or more transforms correspond to a fixed transform kernel ([0171, preset is interpreted as fixed)). Regarding claim 5, Koo discloses the method of claim 1, wherein each of the multiple-transform-selection groups comprises at least one or more adaptive transform kernels0141], transform kernels, wherein composing the multiple-transform-selection groups comprises: decoding, from the bitstream, at least one index indicating the at least one or more adaptive transform kernels ([0202], wherein index as to which transform is to be applied). Regarding claim 6, Koo discloses the method of claim 3, wherein each of the multiple-transform-selection groups comprises a fixed transform kernel for the primary transform ([0217]), and further comprises at least one or more adaptive transform kernels (Fig 8), wherein composing the multiple-transform-selection groups comprises: decoding, from the bitstream, at least one index indicating the at least one or more adaptive transform kernels ([0141] adaptive index). Regarding claim 7, Koo discloses the method of claim 1, wherein the multiple-transform-selection groups comprise: some multiple-transform-selection groups that comprise at least one or more fixed transform kernels ([0171]); and other remaining multiple-transform-selection groups that comprise at least one or more adaptive transform kernels (Fig 8). Regarding claim 8, Koo discloses the method of claim 1, wherein selecting the multiple-transform-selection group comprises: selecting a different multiple-transform-selection group based on whether the current block is an intra block or I block or a predictive/bi-predictive block or P/B block ([0129], [0161], Fig 8). Regarding claim 9, Koo discloses the method of claim 1, wherein selecting the multiple-transform-selection group comprises: selecting a different multiple-transform-selection group based on a magnitude of a quantization parameter of the current block, a current frame, or a current sequence ([0075]). Regarding claim 10, Koo discloses the method of claim 1, wherein selecting the multiple-transform-selection group comprises: selecting a different multiple-transform-selection group based on an intra- prediction mode of the current block (Fig 8). Regarding claim 11, Koo discloses the method of claim 1, wherein selecting the multiple-transform-selection group comprises: selecting a different multiple-transform-selection group based on a width, height, or size of the current block ([0188]). Regarding claim 12, analyses are analogous to those presented for claim 1 and are applicable for claim 12, wherein encoding performs the opposite od decoding (fig.1, encoding) Regarding claim 13, analyses are analogous to those presented for claim 2 and are applicable for claim 13, quantization is the opposite of inverse quantization) Regarding claim 14, analyses are analogous to those presented for claim 1 and are applicable for claim 14. In addition, claim 14 have been interpreted above as nonfunctional descriptive material under MPEP 2111.05(III) and the case law cited therein because it recites “A computer readable storage medium storing the bitstream”. As such, claim 14 is subject to a prior art rejection based on any non-transitory computer readable medium known before the earliest effective filing date of the present application. In other words, the proper interpretation of claim 14 is merely a machine-readable media in which the media is merely a support or carrier for the data being stored wherein the data stored and the way such data is generated should not be given patentable weight. Koo discloses a computer readable medium in [0376]). Conclusion THIS ACTION IS MADE FINAL. 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 LERON BECK whose telephone number is (571)270-1175. The examiner can normally be reached M-F 8 am-5pm. 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, David Czekaj can be reached at (571) 272-7327. 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. LERON . BECK Examiner Art Unit 2487 /LERON BECK/Primary Examiner, Art Unit 2487
Read full office action

Prosecution Timeline

Sep 27, 2024
Application Filed
Nov 03, 2025
Non-Final Rejection mailed — §102, §OTHER, §Other
Feb 02, 2026
Response Filed
May 05, 2026
Final Rejection mailed — §102, §OTHER, §Other
Jul 06, 2026
Response after Non-Final Action

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
80%
Grant Probability
91%
With Interview (+11.4%)
2y 7m (~9m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 865 resolved cases by this examiner. Grant probability derived from career allowance rate.

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