Prosecution Insights
Last updated: April 19, 2026
Application No. 18/023,596

OPTICAL CIRCUIT BOARD

Final Rejection §112
Filed
Feb 27, 2023
Examiner
WONG, ERIC K
Art Unit
2874
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Kyocera Corporation
OA Round
2 (Final)
84%
Grant Probability
Favorable
3-4
OA Rounds
2y 5m
To Grant
93%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allow Rate
765 granted / 911 resolved
+16.0% vs TC avg
Moderate +9% lift
Without
With
+9.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
44 currently pending
Career history
955
Total Applications
across all art units

Statute-Specific Performance

§103
48.3%
+8.3% vs TC avg
§102
40.3%
+0.3% vs TC avg
§112
5.0%
-35.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 911 resolved cases

Office Action

§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 . Response to Arguments Applicant's arguments filed 1/8/2026 have been fully considered but they are not persuasive. Applicant has amended the claims to clarify the cladding layer structure and the location of the alignment legs. These portions of the argument are persuasive, however, Applicant has also added a limitation regarding a “photosensitive material”. This limitation is indefinite. The Specification does not appear to detail what photosensitivity characteristic is involved or changed. Typically, such materials are used to permanently change refractive index characteristics when imparted with UV exposure. It is unclear if the metrics Applicant’s “photosensitivity” is related to is a refractive index change, grating production, or any number of variables that are photosensitive. The Specification is silent to this regard. Therefore, Examiner is left to guess from a wide range of materials that are photosensitive, what physical changes result or the degree of material changes. In one example, the waveguide in the prior art is made of a flexible, transparent material (paragraph 8 of translation) that may include silicon (paragraph 9). Such a material would be photosensitive to light by way of just an optical signal being transmitted through it. In another extreme example, any material imparted by UV light would be photosensitive to temperature. 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, 10-11 and 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 noted above in the Response to Arguments, it is unclear and indefinite as to the “photosensitive material” to be used. This is not a specialized term and encompasses many more materials and their associated characteristics when imparted by not just UV light but any light than disclosed on the Specification. Remaining claims are rejected on the basis of dependency. 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 Eric K Wong whose telephone number is (571)272-2363. The examiner can normally be reached M-Tu, Th-F 8A-6P. 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, Thomas Hollweg can be reached at 571-270-1739. 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. ERIC K. WONG Primary Examiner Art Unit 2874 /Eric Wong/Primary Examiner, Art Unit 2874
Read full office action

Prosecution Timeline

Feb 27, 2023
Application Filed
Oct 08, 2025
Non-Final Rejection — §112
Jan 08, 2026
Response Filed
Feb 26, 2026
Final Rejection — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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WAVEGUIDE STRUCTURE
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Patent 12576447
OPTICAL FIBER MODULES FOR ADDITIVE MANUFACTURING SYSTEMS
2y 5m to grant Granted Mar 17, 2026
Patent 12577143
ANTI-RESONANCE ELEMENT PREFORM FOR PRODUCING AN ANTI-RESONANT HOLLOW-CORE FIBER
2y 5m to grant Granted Mar 17, 2026
Patent 12571977
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2y 5m to grant Granted Mar 10, 2026
Patent 12566306
Light Detection and Ranging (LIDAR) Sensor System Including Integrated Chip
2y 5m to grant Granted Mar 03, 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
84%
Grant Probability
93%
With Interview (+9.2%)
2y 5m
Median Time to Grant
Moderate
PTA Risk
Based on 911 resolved cases by this examiner. Grant probability derived from career allow rate.

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