Prosecution Insights
Last updated: May 29, 2026
Application No. 18/573,774

Photon Detector System with Distance Control

Non-Final OA §102§112
Filed
Dec 22, 2023
Priority
Jul 01, 2021 — NL 2028604 +1 more
Examiner
WILLIAMS, DON J
Art Unit
2878
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Single Quantum B V
OA Round
1 (Non-Final)
84%
Grant Probability
Favorable
1-2
OA Rounds
3m
Est. Remaining
89%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allowance Rate
749 granted / 894 resolved
+15.8% vs TC avg
Moderate +5% lift
Without
With
+5.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
10 currently pending
Career history
902
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
74.5%
+34.5% vs TC avg
§102
20.5%
-19.5% vs TC avg
§112
0.2%
-39.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 894 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 2. Claims 5, 7, 9-10, 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. 3. In claims 5, 7, 9-10, 13, it is unclear which claim, claims 5, 7, 9-10, 13 depends from since no claim had been identified. For examining purpose, claims 5, 7, 9-10, 13 will be dependent on claim 1. Appropriate correction is required. Claim Rejections - 35 USC § 102 4. 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. 5. Claims 1-20 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Midolo et al (WO2017148937A1). 6. As to claim 1, Midolo et al disclose (fig. 3) a photon detector system (200) for detecting photons (245) emitted (emits) from an optical fiber (240), the photon detector system (200) comprising: a receiving mechanism (input optical fiber 240 coupled into the input waveguide of the tuneable optical filter 210 defines a receiving mechanism) for receiving the optical fiber (240); a photon detector (280) comprising a superconducting element (270), wherein the photon detector (280) is aligned with the receiving mechanism (input optical fiber 240 coupled into the input waveguide of the tuneable optical filter 210 defines a receiving mechanism), the photon detector (280) having an active area (superconductor nanowire) for detecting photons (245) emitted (emits) from an end-face of the optical fiber (240) received in the receiving mechanism (input optical fiber 240 coupled into the input waveguide of the tuneable optical filter 210 defines a receiving mechanism); an urging mechanism (236) for, in use, urging (move) together the photon detector (280) and the optical fiber (240), (page 12, lines 29-36, page 13, lines 1-7). 7. As to claim 2, Midolo et al disclose (fig. 3) the photon detector system (200) wherein the urging mechanism (236) comprises a spring-loaded mechanism (237, 238), (page 12, lines 34-36). 8. As to claim 3, Midolo et al disclose (fig. 3) the photon detector system (200) wherein the urging mechanism (236) comprises a piezo electric actuator (actuator), (page 12, lines 34-36). 9. As to claim 4, Midolo et al disclose (fig. 3) the photon detector system (200) wherein the photon detector (280) further comprises a spacer element (210) arranged between the photon detector (280) and the optical fiber (240) for spacing the end-face of the optical fiber (240) from the active area (superconductor nanowire) of the photon detector (280), (page 12, lines 29-36, page 13, lines 1-7). 10. As to claim 5, Midolo et al disclose (fig. 3) the photon detector system (200) wherein the urging mechanism (236) is configured such that in use the optical fiber (240) is urged (moves) to abut onto the spacer element (210), (page 12, lines 29-36). 11. As to claim 6, Midolo et al disclose (fig. 3) the photon detector system (200) wherein the photon detector (280) and the spacer element (210) are fixedly connected together and the urging mechanism (236) is configured to urge (move) the optical fiber (240) towards the photon detector (280) and the spacer element (210), (page 12, lines 29-36, page 13, lines 1-7). 12. As to claim 7, Midolo et al disclose (fig. 3) the photon detector system (200) wherein the photon detector system (200) comprises a body (on-chip), wherein the photon detector (280) and the spacer element (210), and optionally the receiving mechanism (input optical fiber 240 coupled into the input waveguide of the tuneable optical filter 210 defines a receiving mechanism), are mounted fixed on the body (on-chip), (page 12, lines 29-36). 13. As to claim 8, Midolo et al disclose (fig. 3) the photon detector system (200) wherein the spacer element (210) is a spacer layer (filter layer) deposited on the photon detector (280), (page 12, lines 29-36). 14. As to claim 9, Midolo et al disclose (fig. 3) the photon detector system (200) wherein the spacer layer (filer layer) is deposited on the photon detector (280) leaving an empty space at its center, (page 12, lines 29-36). 15. As to claim 10, Midolo et al disclose (fig. 3) the photon detector system (200) wherein the empty space in the spacer layer (filter layer) covers substantially the active area (superconductor nanowire), (page 12, lines 29-36, page 13, lines 1-7). 16. As to claim 11, Midolo et al disclose (fig. 3) the photon detector system wherein the spacer layer (210 filter layer) is made of one of a dielectric material, (page 12, lines 29-36). 17. As to claim 12, Midolo et al discloses (fig. 3) the photon detector (200) wherein the urging mechanism (236) is configured to engage a ferrule (coupler) mounted at an extremity of the optical fiber (240), (page 12, lines 29-34). 18. As to claim 13, Midolo et al disclose (fig. 3) the photon detector system (200) wherein the urging mechanism (236) is configured to engage a flange of the ferrule (coupler, connector), the flange extending parallel to the active area (270), (page 13, lines 1-7). 19. As to claim 14, Midolo et al disclose (fig. 3) the photon detector system (200) wherein the receiving mechanism (input optical fiber 240 coupled into the input waveguide of the tuneable optical filter 210 defines a receiving mechanism) is an alignment sleeve configured to receive a ferrule (coupler, connector) mounted at the extremity of the optical fiber (240), (page 12, lines 29-36). 20. As to claim 15, Midolo et al disclose (fig. 3) the photon detector system (200) wherein the superconducting element (270) is a superconducting layer (superconductor nanowire), (page 13, lines 1-7). 21. As to claim 16, Midolo et al disclose (fig. 3) the photon detector system (200) wherein the superconducting layer (superconductor nanowire) is a superconducting nanowire layer (superconductor nanowire), (page 13, lines 1-7). 22. As to claim 17, Midolo et al disclose (fig. 3) the photon detector system (200) wherein the superconducting element (270) comprises the active area (superconductor nanowire), (page 13, lines 1-7). 23. As to claim 18, Midolo et al disclose (fig. 3) a method for detecting photons (245) emitted (emits) from an optical fiber (240), the method comprising: arranging a receiving mechanism (input optical fiber 240 coupled into the input waveguide of the tuneable optical filter 210 defines a receiving mechanism) for receiving the optical fiber (240), (page 12, lines 29-36); arranging a photon detector (280) aligned with the receiving mechanism (input optical fiber 240 coupled into the input waveguide of the tuneable optical filter 210 defines a receiving mechanism), the photon detector (280) having an active area (superconductor nanowire) for detecting (detects) photons (245) emitted (emits) from an end-face of the optical fiber (240) received in the receiving mechanism (input optical fiber 240 coupled into the input waveguide of the tuneable optical filter 210 defines a receiving mechanism); urging (moves) together the photon detector (280) and the optical fiber (240), detecting (detects) photons (245) emitted (emits) from the end-face of the optical fiber (240) using the photon detector (280), (page 12, lines 29-36, page 13, 1-7). 24. As to claim 19, Midolo et al disclose (fig. 3) a photon detector system (200) for detecting (detects) photons (245) emitted (emits) from an optical fiber (240), the photon detector system (200) comprising: a single photon detector (280) comprising a superconducting element (270), the single photon detector (280) having an active area (superconductor nanowire) for detecting (detects) photons (245) emitted (emits) from an end-face of the optical fiber (240), wherein the superconducting element (270) is a superconducting nanowire layer (superconductor nanowire); an urging mechanism (236) for, in use, urging (moves) together the single photon detector (280) and the optical fiber (240), (page 12, lines 29-36, page 13, lines 1-7). 25. As to claim 20, Midolo et al disclose (fig. 3) the photon detector system (200) wherein the urging mechanism (236) comprises at least one of a piezo electric actuator (actuator), (page 12, lines 29-36). Conclusion 26. Any inquiry concerning this communication or earlier communications from the examiner should be directed to DON J WILLIAMS whose telephone number is (571)272-8538. The examiner can normally be reached M-F 8 a.m.-5 p.m.. 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. /DON J WILLIAMS/Examiner, Art Unit 2878 /GEORGIA Y EPPS/Supervisory Patent Examiner, Art Unit 2878
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Prosecution Timeline

Dec 22, 2023
Application Filed
Oct 01, 2025
Non-Final Rejection mailed — §102, §112
Apr 02, 2026
Response after Non-Final Action

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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
84%
Grant Probability
89%
With Interview (+5.3%)
2y 8m (~3m remaining)
Median Time to Grant
Low
PTA Risk
Based on 894 resolved cases by this examiner. Grant probability derived from career allowance rate.

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