Prosecution Insights
Last updated: July 17, 2026
Application No. 18/682,917

Gating Apparatus for Single-photon Detector and Quantum Communication Device

Non-Final OA §112
Filed
Feb 11, 2024
Priority
Aug 12, 2021 — CN 202110921945.7 +1 more
Examiner
BARUA, PRANESH K
Art Unit
2878
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Qudoor Technologies Inc.
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
91%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allowance Rate
391 granted / 502 resolved
+9.9% vs TC avg
Moderate +13% lift
Without
With
+13.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
18 currently pending
Career history
523
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
92.7%
+52.7% vs TC avg
§102
0.2%
-39.8% vs TC avg
§112
3.4%
-36.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 502 resolved cases

Office Action

§112
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 . Means-plus-Function Language The following is a quotation of 35 U.S.C. § 112(f): ELEMENT IN CLAIM FOR A COMBINATION.—An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof Use of the word “means” (or “step for”) in a claim with functional language creates a rebuttable presumption that the claim element is to be treated in accordance with § 112(f). The presumption that § 112(f) is invoked is rebutted when the function is recited with sufficient structure, material, or acts within the claim itself to entirely perform the recited function. Absence of the word “means” (or “step for”) in a claim creates a rebuttable presumption that the claim element is not to be treated in accordance with § 112(f). The presumption that § 112(f) is not invoked is rebutted when the claim element recites function but fails to recite sufficiently definite structure, material or acts to perform that function. Claim elements in this application that use the word “means” (or “step for”) are presumed to invoke § 112(f) except as otherwise indicated in an Office action. Similarly, claim elements that do not use the word “means” (or “step for”) are presumed not to invoke § 112(f) except as otherwise indicated in an Office action. The instant application includes one or more claim limitations that do not use the word “means,” but are nonetheless being interpreted under § 112(f) because the claim limitation(s) uses a generic placeholder that is coupled with functional language without reciting sufficient structure to perform the recited function and the generic placeholder is not preceded by a structural modifier. Such claim limitations are: “system synchronization unit, configured to obtain” in claim 1 and 10; “delay unit, configured to delay” in claim 1 and 10. Because this/these claim limitation(s) is/are being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, it/they is/are being interpreted to cover the corresponding structure described in the specification as performing the claimed function, and equivalents thereof as shown in page 6, paragraph 6, “In the synchronization unit 101 shown in Fig. 4, the synchronous light detection unit 109…the phase locked loop 110…”. If applicant does not intend to have this/these limitation(s) interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, applicant may: (1) amend the claim limitation(s) to avoid it/them being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph (e.g., by reciting sufficient structure to perform the claimed function); or (2) present a sufficient showing that the claim limitation(s) recite(s) sufficient structure to perform the claimed function so as to avoid it/them being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. 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 and 10 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 pre-AIA the applicant regards as the invention. Claim limitation “delay unit, configured to delay” invokes 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. However, the written description fails to disclose the corresponding structure, material, or acts for performing the entire claimed function and to clearly link the structure, material, or acts to the function. The instant specification merely states that the delay unit 103 may be configured to delay one periodic gating signal 1011 so that the signals are spaced apart by predetermined duration (page 4, paragraph 1). These parts of the specification fails to set forth an adequate disclosure so that one skilled in the art will understand what structure performs the recited function of delay unit. Fig. 1A further shows a delay unit 103 coupled to logic gate 104 but there is no adequate structure mentioned for the “delay unit” as to a hardware element (such as a DSP, microchip, sensor, etc.) for one in the ordinary skills to identify the “delay unit” of the claim for accomplishing the functions as stated within the claim. Therefore, the claim is indefinite and is rejected under 35 U.S.C. 112(b) or pre-AIA 35 U.S.C. 112, second paragraph. Applicant may: (a) Amend the claim so that the claim limitation will no longer be interpreted as a limitation under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph; (b) Amend the written description of the specification such that it expressly recites what structure, material, or acts perform the entire claimed function, without introducing any new matter (35 U.S.C. 132(a)); or (c) Amend the written description of the specification such that it clearly links the structure, material, or acts disclosed therein to the function recited in the claim, without introducing any new matter (35 U.S.C. 132(a)). If applicant is of the opinion that the written description of the specification already implicitly or inherently discloses the corresponding structure, material, or acts and clearly links them to the function so that one of ordinary skill in the art would recognize what structure, material, or acts perform the claimed function, applicant should clarify the record by either: (a) Amending the written description of the specification such that it expressly recites the corresponding structure, material, or acts for performing the claimed function and clearly links or associates the structure, material, or acts to the claimed function, without introducing any new matter (35 U.S.C. 132(a)); or (b) Stating on the record what the corresponding structure, material, or acts, which are implicitly or inherently set forth in the written description of the specification, perform the claimed function. For more information, see 37 CFR 1.75(d) and MPEP §§ 608.01(o) and 2181. Allowable Subject Matter Claims 1-11 will be allowed after overcoming the 112 rejections posted above. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. See the notice of reference cited (PTO-892). Any inquiry concerning this communication or earlier communications from the examiner should be directed to PRANESH K BARUA whose telephone number is (571)270-1017. The examiner can normally be reached on Mon-Sat: 11-8pm. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, David Payne can be reached on 5712723024. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /PRANESH K BARUA/Examiner, Art Unit 2635
Read full office action

Prosecution Timeline

Feb 11, 2024
Application Filed
Jun 17, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12663592
FUSED FIBER-OPTIC TAPERS IN OPTICAL WIRELESS RECEIVERS AND METHOD
3y 4m to grant Granted Jun 23, 2026
Patent 12666182
SYSTEMS AND METHODS FOR OPTIMIZATION OF TRANSMISSION SIGNAL QUALITY IN POINT-TO-MULTIPOINT NETWORKS
2y 7m to grant Granted Jun 23, 2026
Patent 12666183
SYSTEMS AND METHODS FOR OPTIMIZATION OF TRANSMISSION SIGNAL QUALITY IN POINT-TO-MULTIPOINT NETWORKS
2y 6m to grant Granted Jun 23, 2026
Patent 12659631
SYSTEMS AND METHODS FOR OPTIMIZATION OF TRANSMISSION SIGNAL QUALITY IN POINT-TO-MULTIPOINT NETWORKS
2y 6m to grant Granted Jun 16, 2026
Patent 12650565
OPTICAL TRANSCEIVER MODULE TEMPERATURE CONTROL DEVICE AND OPTICAL TRANSCEIVER MODULE TEMPERATURE CONTROL METHOD
2y 7m to grant Granted Jun 09, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
78%
Grant Probability
91%
With Interview (+13.2%)
2y 3m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 502 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month