Prosecution Insights
Last updated: April 19, 2026
Application No. 18/425,305

OPTICAL APPARATUS AND IMAGING APPARATUS

Non-Final OA §102§103§112
Filed
Jan 29, 2024
Examiner
WILKES, ZACHARY W
Art Unit
2872
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Canon Kabushiki Kaisha
OA Round
1 (Non-Final)
67%
Grant Probability
Favorable
1-2
OA Rounds
2y 12m
To Grant
89%
With Interview

Examiner Intelligence

Grants 67% — above average
67%
Career Allow Rate
601 granted / 903 resolved
-1.4% vs TC avg
Strong +22% interview lift
Without
With
+22.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 12m
Avg Prosecution
59 currently pending
Career history
962
Total Applications
across all art units

Statute-Specific Performance

§101
1.8%
-38.2% vs TC avg
§103
39.3%
-0.7% vs TC avg
§102
28.6%
-11.4% vs TC avg
§112
24.8%
-15.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 903 resolved cases

Office Action

§102 §103 §112
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 . 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. Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement The information disclosure statement(s) filed on January 29, 2024 have/has been acknowledged and considered by the examiner. Initialed copies of supplied IDS(s) forms are included in this correspondence. Drawings The drawings are objected to as failing to comply with 37 CFR 1.84(p)(5) because they include the following reference character(s) not mentioned in the description: Figure 4 - 42A; Figures 6, 7 - 48B. Corrected drawing sheets in compliance with 37 CFR 1.121(d), or amendment to the specification to add the reference character(s) in the description in compliance with 37 CFR 1.121(b) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1-13 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. As to claim 1, the claim (line 10) recites “one of the biasing members” which lacks antecedent basis (MPEP 2173.05(e)). Claim 1 only introduces one biasing member prior to this. As to claim 1, the claim (line 11-12) recites “the other of the biasing members” which lacks antecedent basis (MPEP 2173.05(e)). Claim 1 only introduces one biasing member prior to this. As to claim 12, the claim (line 12) recites “one of the biasing members” which lacks antecedent basis (MPEP 2173.05(e)). Claim 12 only introduces one biasing member prior to this. As to claim 12, the claim (line 13-14) recites “the other of the biasing members” which lacks antecedent basis (MPEP 2173.05(e)). Claim 12 only introduces one biasing member prior to this. As to claim 12, the claim (line 17) the claim recites “the object side” which lacks antecedent basis (MPEP 2173.05(e)). Examiner will understand as “an object side”. As to claim 12, the claim (line 19) the claim recites “the subject side” which lacks antecedent basis (MPEP 2173.05(e)). Examiner will understand as “the object side” as is consistent with the specification. Claims 2-11, 13 are rejected as dependent upon claims 1 or 12. As to claim 2, the claim recites “the cam grooves for displacing” which lacks antecedent basis (MPEP 2173.05(e)). Claim 1 introduces only one cam groove and doesn’t specify it displaces anything. As to claim 10, the claim recites “the linear guide portion” which lacks antecedent basis (MPEP 2173.05(e)). As to claim 11, the claim recites “the first engaging member performs backlash removal with respect to the straight guide portion and the cam groove” which is a function that does not appear to follow from the claimed structure (MPEP 2173.05(g)). Specifically, such language appears directed to a problem to be solved/result achieved by the first engaging member, however the metes and bounds are unclear how the first engaging member performs such function. According to Applicant’s specification (Spec. para. [0046]), backlash removal appears to be based on the spring biasing force, thus how the first engaging member performs the backlash removal is unclear. For purposes of compact prosecution, so long as the prior art teaches the structure of claim 1, such backlash prevention will be presumed present. 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. (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, 7-13 are rejected under 35 U.S.C. 102(a1) as being anticipated by Onda (US 6,072,639). As to claim 1, Onda teaches an optical apparatus (Onda Figs. 1, 2) comprising a first holding member (Onda Fig. 2 - 13) configured to hold a first engaging member (Onda Fig. 2 - 14); a second holding member (Onda Fig. 2 - 15) configured to hold a second engaging member (Onda Fig. 2 - 16); a guide barrel having a straight guide portion (Onda Fig. 2 - 11, 11a, 11b) with which the first engaging member and the second are engaged (Onda Fig. 2 - 11a, 14, 11b, 16; Fig. 1 - 14, 16, 11a, 11b; col. 5:35-40; col. 5:52-55); a cam barrel (Onda Fig. 2 - 6+17) having a cam groove (Onda Fig. 2 - 6a, 17a; col. 5:25-32; col. 5:50-55) with which the first engaging member and the second engaging member are engaged (Onda Fig. 1 - 6a, 17a, 14, 16); a biasing member (Onda Fig. 2 - 18; col. 6:7-13) configured to bias the first engaging member and the second engaging member in a direction in which the first engaging member and the second engaging member are separated from each other (Onda Fig. 2 - 18; col. 6:7-13 - The zoom lens barrel assembly 1 has a coil spring 18 disposed between the second and third lens holder rings 13 and 15 to force the cam follower pins 14 and 16 against the inside walls of the zooming cam grooves 6a and cam grooves 17a, respectively, in the axial direction) by one of the biasing members abutting on a first abutting portion provided on the first holding member and the other of the biasing member abutting on a second abutting portion provided on the second holding member (Onda Fig. 1 - 18, 13, 15; see below); PNG media_image1.png 396 767 media_image1.png Greyscale an optical element (Onda Fig. 1 - 20, 30); wherein the first engaging member is disposed closer to an object side than the second engaging member in an optical axis direction of the optical element (Onda Fig. 1 - first engaging member (14) closer to object (left side) than second engaging member (16)); the second abutting portion is disposed closer to the object side than the first abutting portion in the optical axis direction (Onda Fig 1; see above, second abutting portion closer to the object (left) than first abutting portion). As to claim 7, Onda teaches all the limitations of the instant invention as detailed above with respect to claim 1, and Onda further teaches the first holding member has an annular shape (Onda Fig. 2 - 13), and a plurality of the first engaging members is fixed along the annular shape (Onda Fig. 2 - 14). As to claim 8, Onda teaches all the limitations of the instant invention as detailed above with respect to claim 1, and Onda further teaches the biasing member biases the first holding member and the second holding member obliquely with respect to the straight guide portion and the cam groove (Onda Fig. 2 - 18, 13, 15; col. 6:7-13 - The zoom lens barrel assembly 1 has a coil spring 18 disposed between the second and third lens holder rings 13 and 15 to force the cam follower pins 14 and 16 against the inside walls of the zooming cam grooves 6a and cam grooves 17a, respectively, in the axial direction). As to claim 9, Onda teaches all the limitations of the instant invention as detailed above with respect to claim 1, and Onda further teaches the biasing member is a tension coil spring (Onda Fig. 2 - 18; col. 6:7-13). As to claim 10, Onda teaches all the limitations of the instant invention as detailed above with respect to claim 1, and Onda further teaches the linear guide portion is a linear groove (Onda Fig. 1 - 11a, 11b) that guides the first holding member and the second holding member in the optical axis (Onda Fig. 2 - 11a, 13, 11b, 15; Fig. 1 - 11a, 14, 13, 11b, 16, 15); and the cam groove is formed to be inclined with respect to the optical axis direction (Onda Fig. 2 - 6a, 17a), and the first holding member and the second holding member are displaced in the optical axis direction along the cam groove (Onda Fig. 1 - 13, 15, S). As to claim 11, Onda teaches all the limitations of the instant invention as detailed above with respect to claim 1, and Onda further teaches the first engaging member performs backlash removal with respect to the straight guide portion and the cam portion (Onda Fig. 2 - 18, 13, 15; col. 6:7-13 - The zoom lens barrel assembly 1 has a coil spring 18 disposed between the second and third lens holder rings 13 and 15 to force the cam follower pins 14 and 16 against the inside walls of the zooming cam grooves 6a and cam grooves 17a, respectively, in the axial direction). As to claim 12, Onda teaches an imaging apparatus (Onda Figs. 1, 2) comprising an optical apparatus and an image pickup element configured to capture an image formed by the optical apparatus (Onda Fig. 1; Fig. 2; col. 1:10-15), the optical apparatus comprising a first holding member (Onda Fig. 2 - 13) configured to hold a first engaging member (Onda Fig. 2 - 14); a second holding member (Onda Fig. 2 - 15) configured to hold a second engaging member (Onda Fig. 2 - 16); a guide barrel having a straight guide portion (Onda Fig. 2 - 11, 11a, 11b) with which the first engaging member and the second are engaged (Onda Fig. 2 - 11a, 14, 11b, 16; Fig. 1 - 14, 16, 11a, 11b; col. 5:35-40; col. 5:52-55); a cam barrel (Onda Fig. 2 - 6+17) having a cam groove (Onda Fig. 2 - 6a, 17a; col. 5:25-32; col. 5:50-55) with which the first engaging member and the second engaging member are engaged (Onda Fig. 1 - 6a, 17a, 14, 16); a biasing member (Onda Fig. 2 - 18; col. 6:7-13) configured to bias the first engaging member and the second engaging member in a direction in which the first engaging member and the second engaging member are separated from each other (Onda Fig. 2 - 18; col. 6:7-13 - The zoom lens barrel assembly 1 has a coil spring 18 disposed between the second and third lens holder rings 13 and 15 to force the cam follower pins 14 and 16 against the inside walls of the zooming cam grooves 6a and cam grooves 17a, respectively, in the axial direction) by one of the biasing members abutting on a first abutting portion provided on the first holding member and the other of the biasing member abutting on a second abutting portion provided on the second holding member (Onda Fig. 1 - 18, 13, 15; see below); PNG media_image1.png 396 767 media_image1.png Greyscale an optical element (Onda Fig. 1 - 20, 30); wherein the first engaging member is disposed closer to an object side than the second engaging member in an optical axis direction of the optical element (Onda Fig. 1 - first engaging member (14) closer to object (left side) than second engaging member (16)); the second abutting portion is disposed closer to the object side than the first abutting portion in the optical axis direction (Onda Fig 1; see above, second abutting portion closer to the object (left) than first abutting portion). As to claim 13, Onda teaches all the limitations of the instant invention as detailed above with respect to claim 12, and Onda further teaches the optical apparatus is detachable from the imaging apparatus (Onda Figs. 1, 2). 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claims 2, 5-6 are rejected under 35 U.S.C. 103 as being unpatentable over Onda as applied to claim 1 above, and further in view of Iwasaki et al. (US 2022/0121000 - Iwasaki). As to claim 2, Onda teaches all the limitations of the instant invention as detailed above with respect to claim 1, and Onda further teaches the cam grooves for displacing the first engaging member and the second engaging member in the optical axis direction are the same groove (Onda Fig. 2 - 6a, 17a both being the same as they are both helical). Onda does not specify as viewed along the optical axis direction, the first engaging member and the second engaging member at least partially overlap each other. In the same field of endeavor Iwasaki teaches first and second engaging members overlapping in the optical axis direction (Iwasaki Fig. 1 - 30A, 30B; Fig. 2 - 30A, 30B; para. [0063]). It would have been obvious to one of ordinary sill in the art before the effective filing date of the instant invention to provide the first and second engagement members partially overlapping in the optical axis direction since, as taught by Iwasaki, such front-rear alignment is well known in the art for the cam followers to engage with the cam grooves (Iwasaki Fig. 1 - 30A, 30B; Fig. 2 - 30A, 30B; para. [0063]). As to claim 5, Onda teaches all the limitations of the instant invention as detailed above with respect to claim 1, and Onda further teaches the second holding member holds a lens barrel that holds the optical element (Onda Fig. 2 - 15, 30), the second abutting portion is provided on the lens barrel (Onda Fig. 1 - 13, 15, 18). Onda doesn’t specify a roller member to be capable of eccentricity adjustment. In the same field of endeavor Iwasaki teaches roller members capable of eccentricity adjustment (Iwasaki Fig. 2 - 102; para. [0098]). It would have been obvious to one of ordinary skill in the art before the effective filing date of the instant invention to provide such rollers since, a taught by Iwasaki, such rollers are well known in the art for the purpose of providing eccentricity (torque) adjustment (Iwasaki Fig. 2 - 102; para. [0098]). As to claim 6, Onda in view of Iwasaki teaches all the limitations of the instant invention as detailed above with respect to claim 5, and Onda further teaches the first holding member is supported by the lens barrel via the biasing member (Onda Fig. 1 - 13, 18), and moves in the direction along the optical axis integrally with the lens barrel (Onda Fig. 1 - 13, 15, 18). Claims 3-4 are rejected under 35 U.S.C. 103 as being unpatentable over Onda as applied to claim 1 above, and further in view of Weber (US 5,586,467). As to claim 3, Onda teaches all the limitations of the instant invention as detailed above with respect to claim 1, but doesn’t specify a part of the biasing member overlaps with a part of the first engaging member or the second engaging member in the optical axis direction. In the same field of endeavor Weber teaches providing lens barrels with engaging members (Weber Fig. 1 - 21, 22, 23; Fig. 2a - 21, 22, 23, 31, 32) and a biasing member (Weber Fig. 2a - 331, 332) where the biasing member overlaps with a part of the first engaging member or the second engaging member in the optical axis direction (Weber Fig. 2a - spring (332) overlapping in the optical axis direction (O) with engaging member (23, 22, 32)). It would have been obvious to one of ordinary skill in the art before the effective filing date of the instant invention to provide such overlapping arrangement with engaging member and spring since, as taught by Weber, such arranged allows for biasing the engaging members with the various cams/grooves to prevent backlash (Weber col. 3:10-20). As to claim 4, Onda teaches all the limitations of the instant invention as detailed above with respect to claim 1, but doesn’t specify at least a part of the biasing member overlaps with the first engaging member or the second engaging member in a radial direction. In the same field of endeavor Weber teaches providing lens barrels with engaging members (Weber Fig. 1 - 21, 22, 23; Fig. 2a - 21, 22, 23, 31, 32) and a biasing member (Weber Fig. 2a - 331, 332) where the biasing member overlaps with a part of the first engaging member or the second engaging member in a radial direction direction (Weber Fig. 2a - springs (331, 332) overlapping in a radial direction (up/down) with engaging member (21, 23)). It would have been obvious to one of ordinary skill in the art before the effective filing date of the instant invention to provide such overlapping arrangement with engaging member and spring since, as taught by Weber, such arranged allows for biasing the engaging members with the various cams/grooves to prevent backlash (Weber col. 3:10-20). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure: Iwasaki et al. (US 12,313,901); Konishi (US 11,586,003; 2021/0223502); Nagaoka (US 12,066,687; 2022/0075140); Omiya (US 6,094,534); Coath (US 5,818,648); Weis (US 4,322,151); Sawahata (JP 2013-257369); Toma (JP 2010-066633); Oya (JP 2008-020488) are cited as additional examples of optical devices with elastic members/springs to prevent backlash between lens holders/barrels. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ZACHARY W WILKES whose telephone number is (571)270-7540. The examiner can normally be reached M-F 8-4 (Pacific). If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Ricky Mack can be reached at 571-272-2333. 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. /ZACHARY W WILKES/Primary Examiner, Art Unit 2872 February 4, 2026
Read full office action

Prosecution Timeline

Jan 29, 2024
Application Filed
Feb 04, 2026
Non-Final Rejection — §102, §103, §112 (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
67%
Grant Probability
89%
With Interview (+22.2%)
2y 12m
Median Time to Grant
Low
PTA Risk
Based on 903 resolved cases by this examiner. Grant probability derived from career allow rate.

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