Prosecution Insights
Last updated: September 24, 2026
Application No. 19/073,073

SINGLE-PHOTON AVALANCHE DIODE-BASED IMAGE SENSOR AND METHOD FOR DRIVING SAME

Non-Final OA §102§112
Filed
Mar 07, 2025
Priority
Sep 27, 2022 — RE 10-2022-0122648 +1 more
Examiner
KO, TONY
Art Unit
Tech Center
Assignee
Xo Semiconductor Inc.
OA Round
1 (Non-Final)
88%
Grant Probability
Favorable
1-2
OA Rounds
10m
Est. Remaining
90%
With Interview

Examiner Intelligence

Grants 88% — above average
88%
Career Allowance Rate
788 granted / 897 resolved
+27.8% vs TC avg
Minimal +3% lift
Without
With
+2.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
19 currently pending
Career history
906
Total Applications
across all art units

Statute-Specific Performance

§101
1.6%
-38.4% vs TC avg
§103
29.4%
-10.6% vs TC avg
§102
46.0%
+6.0% vs TC avg
§112
19.8%
-20.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 897 resolved cases

Office Action

§102 §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. Claim 1 is 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. Claim 1 recites the limitation "the number of the pluses" in line 6 of claim 1. There is insufficient antecedent basis for this limitation in the claim. Claim 3 recites “the time points” lacks antecedent basis. Claims 2 and 4-8 are rejected because of their dependency upon rejected claim 1. 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. Claim(s) 1, 9 and 10 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Tochigi et al (US 20210051279). Regarding claims 1, 9 and 10, Tochigi et al teach (Figs. 1-28) A single-photon avalanche diode-based image sensor, method and computer-readable non transitory recording medium, the sensor comprising: a single-photon avalanche diode (222 – [0082]) configured to generate a plurality of pulses corresponding to each of a plurality of photons received during a predetermined exposure time; a front-end circuit (270) configured to receive a set of pulses, which are received during a portion of time within the exposure time ([0086-0090]), among the plurality of pulses; and a counter (274) configured to count the number of the pulses in the set of the pulses, wherein an end point of the portion of time (it is understood the end point portion of time and time is understood as not structural) is based on an overflow time point of the counter for counting the number of the pulses in the set of the pulses. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to TONY KO whose telephone number is (571)272-1926. The examiner can normally be reached Monday-Friday 9-5pm. 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, Georgia Epps can be reached at 571-272-2328. 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. /TONY KO/Primary Examiner, Art Unit 2878 TK
Read full office action

Prosecution Timeline

Mar 07, 2025
Application Filed
Jul 09, 2026
Non-Final Rejection mailed — §102, §112
Aug 19, 2026
Interview Requested
Sep 17, 2026
Applicant Interview (Telephonic)
Sep 18, 2026
Examiner Interview Summary

Precedent Cases

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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
88%
Grant Probability
90%
With Interview (+2.6%)
2y 4m (~10m remaining)
Median Time to Grant
Low
PTA Risk
Based on 897 resolved cases by this examiner. Grant probability derived from career allowance rate.

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