Prosecution Insights
Last updated: April 19, 2026
Application No. 18/772,895

GENERATING AUDIO STREAMS FROM MODIFIED AUDIO STREAMS AND INFORMATION ABOUT THE MODIFICATIONS TO THE AUDIO STREAMS

Non-Final OA §102§103
Filed
Jul 15, 2024
Examiner
SHAH, ANTIM G
Art Unit
2693
Tech Center
2600 — Communications
Assignee
Zoom Video Communications, Inc.
OA Round
1 (Non-Final)
74%
Grant Probability
Favorable
1-2
OA Rounds
3y 3m
To Grant
99%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allow Rate
430 granted / 580 resolved
+12.1% vs TC avg
Strong +39% interview lift
Without
With
+39.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
15 currently pending
Career history
595
Total Applications
across all art units

Statute-Specific Performance

§101
8.4%
-31.6% vs TC avg
§103
48.4%
+8.4% vs TC avg
§102
20.4%
-19.6% vs TC avg
§112
13.2%
-26.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 580 resolved cases

Office Action

§102 §103
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 . 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 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1-2, 9 and 15 are rejected under 35 U.S.C. 102(a)(1)/(a)(2) as being anticipated by U.S. Patent Application Publication No. 20220406318 to Tyagi et al. (“Tyagi”). As to claim 1, 9 and 15, Tyagi discloses a method, a non-transitory computer-readable medium, and a system, the method comprising: joining a first client device to a video conference, a plurality of client devices connected to the video conference [paragraph 0045: “video conference room systems 116, 118”]; receiving, from the first client device, a modified first audio stream comprising information about the modification to the first audio stream [Fig. 2, paragraphs 0046, 0100: IVAS bitstreams are received; table index and metadata quantization level information (i.e. information about the modification), as well as the EVS bitstreams (i.e. the modified first audio stream)]; generating a second audio stream using the modified first audio stream and the information about the modification to the first audio stream [paragraph 0100: the IVAS decoder reconstructs the downmix signal using the EVS bitstreams and the information about the modification]; and outputting the second audio stream [paragraph 0049: output for playback]. As to claim 2, Tyagi discloses wherein the second audio stream is generated to approximate an unmodified first audio stream [paragraph 0100]. Claim Rejections - 35 USC § 103 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 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 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 of this title, 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 3-4, 10, 16 are rejected under 35 U.S.C. 103 as being unpatentable over U.S. Patent Application Publication No. No. 20220406318 to Tyagi et al. (“Tyagi”) in view of U.S. Patent Application Publication No. 20240105198 to Yang et al. (“Yang”). As to claim 3, Tyagi discloses the method of claim 1 [see rejection of claim 1]. Tyagi does not expressly wherein the second audio stream is output to an automatic speech recognition service. In the same or similar field of invention, Yang discloses wherein the second audio stream is output to an automatic speech recognition service [paragraphs 0048, 0118-0120, 123-127]. It would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to modify Tyagi to have the second audio stream is output to an automatic speech recognition service as taught by Yang. The suggestion/motivation would have been to improve the accuracy, intelligence, quality of the conference along with the user experience of the conference [Yang paragraph 0026]. As to claims 4, 10 and 16, Yang discloses wherein the modification to the first audio stream includes noise suppression [paragraphs 0090, 0097-100]. In addition, the same motivation is used as the rejection of claim 3. Claims 6, 12 and 18 are rejected under 35 U.S.C. 103 as being unpatentable over U.S. Patent Application Publication No. No. 20220406318 to Tyagi et al. (“Tyagi”) in view of U.S. Patent No. 11563855 to Spivak et al. (“Spivak”). As to claims 6, 12 and 18, Tyagi discloses the method of claim 1, the non-transitory computer-readable medium of claim 8 and the system of claim 15 [see rejection of claims 1, 8 and 15]. Tyagi does not expressly outputting an indication to disable modification of audio streams; and receiving, from the first client device, an unmodified third audio stream. In the same or similar field of invention, Spivak discloses outputting an indication to disable modification of audio streams; and receiving, from the first client device, an unmodified third audio stream [Spivak Fig. 5: 510, column 12 lines 31-44]. When user activate the button 510, modified stream with spatial sound will be streamed. Further, when user deactivate the spatialization button 510, unmodified audio stream will be streamed. It would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to modify Tyagi to have feature of outputting an indication to disable modification of audio streams; and receiving, from the first client device, an unmodified third audio stream as taught by Spivak. The suggestion/motivation would have been to customize audio mixing for users in virtual conference calls [Spivak column 1 lines 7-8]. Claims 7, 13 and 19 are rejected under 35 U.S.C. 103 as being unpatentable over U.S. Patent Application Publication No. No. 20250316279 to Tyagi et al. (“Tyagi”) in view of U.S. Patent No. 20250316279 to Wang et al. (“Wang”). As to claims 7, 13 and 19, Tyagi discloses the method of claim 1, the non-transitory computer-readable medium of claim 8 and the system of claim 15 [see rejection of claims 1, 8 and 15]. Tyagi further discloses the IVAS bitstream. There are headers and audio frames [Fig. 5A, paragraphs 0107]. It would have been extremely obvious to include the information about the modification as extension data. However, in the same or similar field of invention, Wang discloses the information about the modification to the first audio stream comprises extension data, including a representation of the modification to the first audio stream; and the modified first audio stream comprises one or more packets, each packet comprising: a header; an audio frame; and the extension data [Wang Figs. 6A-6C, paragraphs 0074-0084]. It would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to modify Tyagi to have feature of outputting an indication to disable modification of audio streams; and receiving, from the first client device, an unmodified third audio stream as taught by Wang. The suggestion/motivation would have been to provide bandwidth extension data to improve the quality of the audio frame and also improving the audio playing effect [Wang paragraph 0036]. Allowable Subject Matter Claims 5, 8, 11, 14, 17 and 20 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure: U.S. Patent Application Publication No. No. 20240146560 to Swerdlow et al. (Figs. 6-9 and corresponding paragraphs). U.S. Patent Application Publication No. No. 20230032785 to Deng et al. (Figs. 2-5 and corresponding paragraphs). Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANTIM G SHAH whose telephone number is (571)270-5214. The examiner can normally be reached Mon-Fri 7:30am-4pm. 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, Ahmad Matar can be reached at 571-272-7488. 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. /ANTIM G SHAH/Primary Examiner, Art Unit 2693
Read full office action

Prosecution Timeline

Jul 15, 2024
Application Filed
Feb 10, 2026
Examiner Interview (Telephonic)
Feb 13, 2026
Non-Final Rejection — §102, §103 (current)

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

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Prosecution Projections

1-2
Expected OA Rounds
74%
Grant Probability
99%
With Interview (+39.2%)
3y 3m
Median Time to Grant
Low
PTA Risk
Based on 580 resolved cases by this examiner. Grant probability derived from career allow rate.

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