Prosecution Insights
Last updated: April 19, 2026
Application No. 18/485,429

OPTICAL DEVICE, OPTICAL TRANSMISSION APPARATUS, AND OPTICAL RECEPTION APPARATUS

Non-Final OA §112
Filed
Oct 12, 2023
Examiner
WONG, ERIC K
Art Unit
2874
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Fujitsu Optical Components Limited
OA Round
1 (Non-Final)
84%
Grant Probability
Favorable
1-2
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 . 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 1-20 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. Independent claims 1 and 19-20 recite language to the effect of first or second optical characteristics that are “converted”. No characteristics are claimed. The Specification in no way clearly defines or articulates every possible characteristic to support such claim language. Further, the claim recites that a first converter converts a first signal light into a second with a second optical characteristic. The claim does not require that the first characteristic even be altered or changed. Examiner is left to guess as to whether this is to solely mean that the polarization states (TE/TM) are converted and changed or if there is another optical characteristic that may be changed or altered. Remaining claims are rejected on the basis of dependency. However, again, Examiner is left to guess the “optical characteristics” since both a rotator and a beam splitter is recited in dependent claims. Both would output a signal that has an optical characteristic different from an input. Claim Objections Claim 19 is objected to because of the following informalities: Line 11 of this claim mis-spells “convertor”. Appropriate correction is required. Conclusion 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
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Prosecution Timeline

Oct 12, 2023
Application Filed
Feb 12, 2026
Non-Final Rejection — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12585063
WAVEGUIDE STRUCTURE
2y 5m to grant Granted Mar 24, 2026
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
MULTIPORTS AND OTHER DEVICES HAVING OPTICAL CONNECTION PORTS WITH SECURING FEATURES AND METHODS OF MAKING THE SAME
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

1-2
Expected OA Rounds
84%
Grant Probability
93%
With Interview (+9.2%)
2y 5m
Median Time to Grant
Low
PTA Risk
Based on 911 resolved cases by this examiner. Grant probability derived from career allow rate.

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