Prosecution Insights
Last updated: October 02, 2026
Application No. 18/996,677

REMOTE OPTICAL PATH SWITCHING NODE AND REMOVE OPTICAL PATH SWITCHING METHOD

Non-Final OA §112
Filed
Jan 17, 2025
Priority
Aug 05, 2022 — nonprovisional of PCTJP2022030146
Examiner
BARUA, PRANESH K
Art Unit
Tech Center
Assignee
Nippon Telegraph and Telephone Corporation
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
6m
Est. Remaining
91%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allowance Rate
398 granted / 511 resolved
+17.9% vs TC avg
Moderate +13% lift
Without
With
+13.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
13 currently pending
Career history
531
Total Applications
across all art units

Statute-Specific Performance

§101
1.8%
-38.2% vs TC avg
§103
62.5%
+22.5% vs TC avg
§102
6.5%
-33.5% vs TC avg
§112
26.1%
-13.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 511 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 . Claim Rejections - 35 USC § 112a The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 6-10 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. Claim 6 states “switching connection of core wires of the optical fibers…when the power storage amount is equal to or greater than a threshold value”. Figs. 2 and 3 show flowcharts for switching of power supply between the power supply capacitor and the manhole power generation capacitor. There is no description of performing switching between the fibers “when there is a change in the power storage amount”. Similarly, paragraph [0052] of the specifications also describes the switching of the power supply between the different power supplies but there is no description for switching between the fibers when such power differences occur. The specifications nor the drawings show any support for this limitation. Claim Rejections - 35 USC § 112b 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 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. Claim 1 (and similar claim 6) states “an optical switch unit to switch connection of core wires of optical fibers connected to ports”. This part of the limitation if confusing. Firstly, it is not clear what is meant by core wires of the fibers. A “wire” ordinarily suggests a thin, elongated conductor, often metallic, whereas optical fiber ordinarily comprises a waveguide which at its core is glass or plastic, not a conductive wire. Also, the core of fiber generally is the central light-guiding region of the optical fiber, and this is not metallic. Furthermore, how is an optical switch performing switching of connections of wires? Due to these issues, the scope of the invention is unclear. 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/Primary Examiner, Art Unit 2635
Read full office action

Prosecution Timeline

Jan 17, 2025
Application Filed
Sep 10, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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Patent 12726293
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Patent 12719578
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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
78%
Grant Probability
91%
With Interview (+13.2%)
2y 3m (~6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 511 resolved cases by this examiner. Grant probability derived from career allowance rate.

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