Prosecution Insights
Last updated: July 17, 2026
Application No. 18/354,318

Multichannel Integrated Endoscope System

Final Rejection §102§103
Filed
Jul 18, 2023
Examiner
LONDON, STEPHEN FLOYD
Art Unit
3795
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
OmniVision Technologies Inc.
OA Round
2 (Final)
69%
Grant Probability
Favorable
3-4
OA Rounds
1m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 69% — above average
69%
Career Allowance Rate
153 granted / 222 resolved
-1.1% vs TC avg
Strong +39% interview lift
Without
With
+39.1%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
27 currently pending
Career history
249
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
58.0%
+18.0% vs TC avg
§102
16.0%
-24.0% vs TC avg
§112
14.1%
-25.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 222 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 . Disposition of Claims Claims 1-10 & 12-23 are pending and rejected. Claim 11 is canceled. Response to Arguments 35 U.S.C. § 112(f) is still invoked for “a lighting module” in Claim 1 and for “an imaging module” in Claim 1, as detailed in the previous office action. Applicant’s arguments, see Pages 5, filed April 13, 2026, with respect to the rejections under 35 U.S.C. § 112(b) of Claims 4, 15-16 & 18 have been fully considered and are persuasive in light of amendments to the claims. The rejections under 35 U.S.C. § 112(b) of Claims 4, 15-16 & 18 have been withdrawn. Applicant’s arguments, see Pages 5-8, filed April 13, 2026, with respect to the rejections under 35. U.S.C. §§ 102 & 103 of Claims 1-10 & 12-23 have been fully considered and are not persuasive. In response to Applicant’s arguments that Safai does not disclose a multichannel array sensor because the obtained information from the photodetector sets 154 of the plurality of photodetectors 142 (analogous to Applicant’s multichannel array sensor) is image data and not spectral information, Examiner respectfully disagrees. Applicant’s specification appears to not specifically define “spectral information” but based on Paras. [0030] – [0032] & Figs. 4D-4E of said specification, “spectral information” is interpreted as information regarding the intensities and/or wavelengths (i.e., color) of the reflected light. While Applicant correctly asserts that the photodetector sets 154 of Safai collect image data, Para. [0052] of Safai defines the image data as “ including information regarding the color and intensity of the light sensed [emphasis added]”. As such, Safai does disclose a multichannel array sensor because the obtained information from the photodetector sets 154 of the plurality of photodetectors 142 (analogous to Applicant’s multichannel array sensor) is image data which includes the color and intensity of the sensed light (i.e., spectral information). 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 text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claims 1-5 & 12-17 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Safai et al. (hereinafter "Safai") (US 2019/0064079). Regarding Claim 1, Safai discloses multichannel integrated endoscope system (Fig. 1, 100; [0035]), comprising: a lighting module (Fig. 2, 132; [0041]) configured to emit illumination lights (Fig. 2, 180; [0042]) on an object (Fig. 1, 104; [0035]); an image module (Fig. 4A, a first set of 142 corresponding to 154A; [0051]) configured to capture an image of said object ([0049]); a multichannel sensor module (Fig. 4A, a sensing array comprising 134, 136, and a second set of 142 corresponding to 154B; [0041] & [0051]), configured to obtain a spectral information of said object ([0052]), including an imaging lens (Fig. 4A, 134; [0041]), a light homogenizer (Fig. 4A, 136; [0041]) and a multichannel array sensor (Fig. 4A, a second set of 142 corresponding to 154B; [0051]), wherein said light homogenizer is formed between said multichannel array sensor and said imaging lens (see Fig. 4A). Regarding Claim 2, Safai discloses the multichannel integrated endoscope system of Claim 1. Safai further discloses wherein said multichannel array sensor includes a plurality of spectral sensing zones (Fig. 4A, 154B; [0052]). Regarding Claim 3, Safai discloses the multichannel integrated endoscope system of Claim 2. Safai further discloses wherein each of said plurality of spectral sensing zones divides sensing field of view of said subject into sub field of views ([0052]). Regarding Claim 4, Safai discloses the multichannel integrated endoscope system of Claim 2. Safai further discloses wherein each of said plurality of spectral sensing zones includes a plurality of spectral-filter channels (color channels; [0052]), and each of said plurality of spectral sensing zones generate a spectral information of sub field of views ([0052]). Regarding Claim 5, Safai discloses the multichannel integrated endoscope system of Claim 1. Safai further discloses wherein said light homogenizer is a microlens array (Fig. 2, 136 is a micro-lens array; [0041]). Regarding Claim 12, Safai discloses a multichannel sensor module (Fig. 2, a sensing array comprising 134, 136 and 140; [0041]), comprising: an imaging lens (Fig. 2, 134; [0041]) configured to receive light reflected from an object ([0049]); a light homogenizer (Fig. 2, 136; [0041]) configured to homogenize said light reflected from said object ([0041]); and a multichannel array sensor (Fig. 2, 140; [0041]) configured to receive light reflected from said object for obtaining spectral information of said object ([0041]), wherein said light homogenizer is formed between said multichannel array sensor and said imaging lens (see Fig. 2). Regarding Claim 13, Safai discloses the multichannel sensor module of Claim 12. Safai further discloses wherein said multichannel array sensor includes a plurality of spectral sensing zones (Fig. 2, 142; [0050]). Regarding Claim 14, Safai discloses the multichannel sensor module of Claim 13. Safai further discloses wherein each of said plurality of spectral sensing zones divides sensing field of view of said object into sub field of views ([0051]). Regarding Claim 15, Safai discloses the multichannel sensor module of Claim 14. Safai further discloses wherein each of said plurality of spectral sensing zones includes a plurality of multichannel filter array (Fig. 4A, 154; [0051]), and each of said plurality of spectral sensing zones generate a spectral information of said sub field of views ([0051]). Regarding Claim 16, Safai discloses the multichannel sensor module of Claim 15. Safai further discloses wherein each of said plurality of multichannel filter array includes a plurality of spectra of channels (color channels; [0052]). Regarding Claim 17, Safai discloses the multichannel sensor module of Claim 12. Safai further discloses wherein said light homogenizer is a microlens array (Fig. 2, 136 is a micro-lens array; [0041]). Claim Rejections - 35 USC § 103 The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 7-8 & 19-20 are rejected under 35 U.S.C. 103 as being unpatentable over Safai et al. (hereinafter "Safai") (US 2019/0064079). Regarding Claims 7-8 & 19-20, Safai discloses the multichannel integrated endoscope system of Claim 5 and the multichannel sensor module of Claim 17, respectively. Safai fails to explicitly disclose wherein a ratio of a microlens pitch to a zone pitch is between 0.45 and 1, and wherein a ratio of microlens focal length to the zone pitch is between 2 and 8. However, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to make the ratio of the microlens pitch to a zone pitch and the ratio of microlens focal length to the zone pitch is between 2 and 8 between 0.45 and 1 and between 2 and 8, respectively, since it has been held that “where the only difference between the prior art and the claims was a recitation of relative dimensions of the claimed device and a device having the claimed relative dimensions would not perform differently than the prior art device, the claimed device was not patentably distinct from the prior art device” Gardner v. TEC Syst., Inc., 725 F.2d 1338, 220 USPQ 777 (Fed. Cir. 1984), cert. denied, 469 U.S. 830, 225 SPQ 232 (1984). In the instant case, the multichannel sensor module would not operate differently with the claimed ratios. Further, Applicant places no criticality on the ranges claimed, indicating that “according to embodiments of the present invention, a ratio of a microlens pitch d2 to a zone pitch d1… is between 0.45 and 1 [emphasis added]” and “according to embodiments of the present invention, a ratio of a microlens focal length to a zone pitch is between 2 and 8 [emphasis added]” (see Paras. [0042] & [0044] of Applicant’s specification). Claims 6, 9-10, 18 & 21-23 are rejected under 35 U.S.C. 103 as being unpatentable over Safai et al. (hereinafter "Safai") (US 2019/0064079) in view of Castellon-Rivera et al. (hereinafter "Castellon") (US 2022/0075099). Regarding Claims 6 & 9-10, Safai discloses the multichannel integrated endoscope system of Claim 5. Safai fails to explicitly disclose wherein said microlens array is formed by lenses which only one side has spherical shape; wherein said microlens array includes: a substrate; a first plurality of microlenses formed on one side of said substrate; and an aperture stop layer formed on same side or on other side of said substrate, wherein said aperture stop layer includes a plurality of transparent zones; and wherein said aperture stop layer is form by black photoresist and used to reduce the crosstalk and stray light between said plurality of transparent zones. However, Castellon teaches a microlens array (Fig. 2, 50; [0027]), comprising: a substrate (Fig. 2, 3; [0027]); a first plurality of microlenses (Fig. 2, 2a; [0027]) formed on one side of said substrate (see Fig. 2); wherein said only one side of the first plurality of microlenses has spherical shape (Fig. 2, 21 of 2a are plano-convex lenses; [0027]); an aperture stop layer (Fig. 2, 1; [0027]) formed on same side or on other side of said substrate (see Fig. 2); wherein said aperture stop layer includes a plurality of transparent zones (Fig. 2, 14; [0026]); and wherein said aperture stop layer is form by black photoresist and used to reduce the crosstalk and stray light between said plurality of transparent zones (Fig. 2, 13a and 13b of 1 are made of opaque chromium; [0026]). The advantage of the aperture-stop-layered microlens array is to increase definition detail and light distribution (Castellon; [0026]). Therefore, it would have been obvious before the effective filing date of the claimed invention to someone with ordinary skill in the art to replace the microlens array as disclosed by Safai, with the aperture-stop-layered microlens array taught by Castellon, to increase definition detail and light distribution (Castellon; [0026]). Regarding Claim 18 & 21-23, Safai discloses the multichannel sensor module of Claims 12 & 17. Safai fails to explicitly disclose wherein a microlens array is formed by lenses which only one side has spherical shape; wherein said microlens array includes: a substrate; a first plurality of microlenses formed on one side of said substrate; and an aperture stop layer formed on other side of said substrate, wherein said aperture stop layer includes a plurality of transparent zones; wherein said aperture stop layer is form by black photoresist and used to reduce the crosstalk and stray light between said plurality of transparent zones; and wherein a second plurality of microlenses are formed on said aperture stop layer. However, Castellon teaches a microlens array (Fig. 2, 50; [0027]), comprising: a substrate (Fig. 2, 3; [0027]); a first plurality of microlenses (Fig. 2, 2a; [0027]) formed on one side of said substrate (see Fig. 2); wherein said only one side of the first plurality of microlenses has spherical shape (Fig. 2, 21 of 2a are plano-convex lenses; [0027]); an aperture stop layer (Fig. 2, 1; [0027]) formed on other side of said substrate (see Fig. 2); wherein said aperture stop layer includes a plurality of transparent zones (Fig. 2, 14; [0026]); wherein said aperture stop layer is form by black photoresist and used to reduce the crosstalk and stray light between said plurality of transparent zones (Fig. 2, 13a and 13b of 1 are made of opaque chromium; [0026]); and wherein a second plurality of microlenses are formed on said aperture stop layer (Fig. 2, 2b; [0027]). The advantage of the aperture-stop-layered microlens array is to increase definition detail and light distribution (Castellon; [0026]). Therefore, it would have been obvious before the effective filing date of the claimed invention to someone with ordinary skill in the art to replace the microlens array as disclosed by Safai, with the aperture-stop-layered microlens array taught by Castellon, to increase definition detail and light distribution (Castellon; [0026]). 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 STEPHEN FLOYD LONDON whose telephone number is (571)272-4478. The examiner can normally be reached Monday - Friday: 10:00 am ET - 6:00pm ET. 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, MICHAEL CAREY can be reached at (571)270-7235. 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. /STEPHEN FLOYD LONDON/Examiner, Art Unit 3795 /MICHAEL J CAREY/Supervisory Patent Examiner, Art Unit 3795
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Prosecution Timeline

Jul 18, 2023
Application Filed
Jan 14, 2026
Non-Final Rejection mailed — §102, §103
Apr 13, 2026
Response Filed
Jul 07, 2026
Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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4y 0m to grant Granted May 26, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
69%
Grant Probability
99%
With Interview (+39.1%)
3y 1m (~1m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 222 resolved cases by this examiner. Grant probability derived from career allowance rate.

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