Prosecution Insights
Last updated: April 19, 2026
Application No. 18/699,671

OPTICAL COMMUNICATION APPARATUS, OPTICAL COMMUNICATION SYSTEM AND TRANSMISSION METHOD

Non-Final OA §102
Filed
Apr 09, 2024
Examiner
LI, SHI K
Art Unit
2635
Tech Center
2600 — Communications
Assignee
NTT, Inc.
OA Round
1 (Non-Final)
73%
Grant Probability
Favorable
1-2
OA Rounds
2y 10m
To Grant
79%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allow Rate
604 granted / 824 resolved
+11.3% vs TC avg
Moderate +5% lift
Without
With
+5.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
19 currently pending
Career history
843
Total Applications
across all art units

Statute-Specific Performance

§101
2.0%
-38.0% vs TC avg
§103
56.7%
+16.7% vs TC avg
§102
12.5%
-27.5% vs TC avg
§112
22.7%
-17.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 824 resolved cases

Office Action

§102
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 § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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 and 7-8 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Wachter (U.S. Patent Application Pub. 2013/0322879 A1). Regarding claim 1, Wachter teaches in FIG. 5E an optical communication device comprising: a first optical switch (I/O matrix switch 22 #1 of the first stage; Wachter teaches in paragraph [0032] optical switching) that is connected to a plurality of optical transmission lines (I/O lines 24 and 28 and line connecting switch 22 and switch 34; see also paragraph [0002]) and outputs an optical signal input from any of the optical transmission lines to another optical transmission line (the line connecting switch 22 #1 and switch 34); a second optical switch that is connected to a plurality of optical transmission lines and outputs an optical signal input from any of the optical transmission lines to another optical transmission line (I/O matrix switch 22 #2 of the 3rd stage with I/O lines 24 and 28 and the line connecting switch 22 #2 and switch 34); and a multicast transferer configured to perform multicast transfer of an optical signal transmitted from a first device connected to the first optical switch to one or more second devices connected to the second optical switch (the core matric switch 34 multicasts the signal received from input line 1 to output 21 of the 3rd stage I/O switch 22). Claim 7 is rejected based on the same reason for rejecting claim 1. Claim 8 is rejected based on the same reason for rejecting claim 1 because an apparatus implies the method of using it. Allowable Subject Matter Claims 2-6 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SHI K LI whose telephone number is (571)272-3031. The examiner can normally be reached M-F 6:53 a.m. -3:23 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, David Payne can be reached at 571 272-3024. 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. skl16 February 2026 /SHI K LI/Primary Examiner, Art Unit 2635
Read full office action

Prosecution Timeline

Apr 09, 2024
Application Filed
Feb 16, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12598406
CONTROL OF ONU ACTIVATION IN HIGH BIT RATE PONs
2y 5m to grant Granted Apr 07, 2026
Patent 12593152
DISTRIBUTED OPTICAL SWITCHING AND INTERCONNECT CHIP AND SYSTEM
2y 5m to grant Granted Mar 31, 2026
Patent 12593153
NCF DEVICE ASSEMBLY, DISTRIBUTED NETWORKING SYSTEM, AND DATA TRANSMISSION METHOD
2y 5m to grant Granted Mar 31, 2026
Patent 12587768
NETWORK DEVICE FOR NETWORK FABRICS WITH HARMONIC CONNECTIONS
2y 5m to grant Granted Mar 24, 2026
Patent 12580662
METHOD AND SYSTEM FOR MITIGATING ADVERSE EFFECTS OF A GAS ABSORPTION LINE IN COHERENT OPTICAL COMMUNICATION SYSTEMS
2y 5m to grant Granted Mar 17, 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
73%
Grant Probability
79%
With Interview (+5.3%)
2y 10m
Median Time to Grant
Low
PTA Risk
Based on 824 resolved cases by this examiner. Grant probability derived from career allow rate.

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