Prosecution Insights
Last updated: April 19, 2026
Application No. 18/699,955

OPTICAL COMMUNICATION APPARATUS, OPTICAL COMMUNICATION SYSTEM AND TRANSMISSION METHOD

Non-Final OA §102§DP
Filed
Apr 10, 2024
Examiner
WOLDEKIDAN, HIBRET ASNAKE
Art Unit
2635
Tech Center
2600 — Communications
Assignee
NTT, Inc.
OA Round
1 (Non-Final)
86%
Grant Probability
Favorable
1-2
OA Rounds
2y 5m
To Grant
99%
With Interview

Examiner Intelligence

Grants 86% — above average
86%
Career Allow Rate
719 granted / 837 resolved
+23.9% vs TC avg
Moderate +13% lift
Without
With
+13.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
20 currently pending
Career history
857
Total Applications
across all art units

Statute-Specific Performance

§101
3.8%
-36.2% vs TC avg
§103
53.1%
+13.1% vs TC avg
§102
19.2%
-20.8% vs TC avg
§112
14.3%
-25.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 837 resolved cases

Office Action

§102 §DP
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 . Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory obviousness-type double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); and In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on a nonstatutory double patenting ground provided the conflicting application or patent either is shown to be commonly owned with this application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. Effective January 1, 1994, a registered attorney or agent of record may sign a terminal disclaimer. A terminal disclaimer signed by the assignee must fully comply with 37 CFR 3.73(b). Claims 1,7 are provisionally rejected on the ground of nonstatutory obviousness-type double patenting as being unpatentable over claims 1,4 of copending Application No. 18/699,781. Although the conflicting claims are not identical, they are not patentably distinct from each other because Claims 1,7 of the present application are an obvious subset of the limitations presented in claims 1,4 of copending Application No. 18/699,781. This is a provisional obviousness-type double patenting rejection. The following table illustrates the conflicting claim pairs: Present Application 1 7 App. No. 18/699,781 1,4 1,4 The following table illustrates a mapping of the limitations of claim 1 of the present application when compared against the limitations of claim 1,4 of copending Application No. 18/699,781. The differences have been bolded for purposes of clarity. Claim 1 of Present Application Claim 1,4 of copending Application No. 18/699,781 An optical communication device comprising: Claim 1. An optical communication device comprising: a first 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; a plurality of first distributors that is connected to a plurality of optical transmission lines and outputs an optical signal input from any of first devices to any of the optical transmission lines; Claim 4 further teaches, “…each of the plurality of first distributors includes one or more first wavelength selective optical switches…” 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; a plurality of second distributors units that is connected to a plurality of optical transmission lines and outputs an optical signal input from any of the optical transmission lines to any of second devices; Claim 4 further teaches, “…each of the plurality of second distributors includes one or more second wavelength selective optical switches;…” and a transferer configured to transfer an optical signal transmitted from a first device connected to the first optical switch to a specific second device connected to the second optical switch. and a transferer configured to transfer the optical signal transmitted from the first device connected to any of the plurality of first distributors to any of the plurality of second distributors connected to the specific second device. As the table above illustrates, all the limitations of claim 1 of the present application are taught by claim 1,4 of copending Application No. 18/699,781. Thus, claim 1 of the present application would have been obvious to one of ordinary skill in the art at the time of the invention in view of claim 1,4 of copending Application No. 18/699,781, as anticipation of all limitations is tantamount to obviousness. The following table illustrates a mapping of the limitations of claim 7 of the present application when compared against the limitations of claim 1,4 of copending Application No. 18/699,781. The differences have been bolded for purposes of clarity. Claim 7 of Present Application Claim 1,4 of copending Application No. 18/699,781 7. An optical communication system comprising: Claim 1. An optical communication device comprising: a first 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; a plurality of first distributors that is connected to a plurality of optical transmission lines and outputs an optical signal input from any of first devices to any of the optical transmission lines; Claim 4 further teaches, “…each of the plurality of first distributors includes one or more first wavelength selective optical switches…” 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; a plurality of second distributors that is connected to a plurality of optical transmission lines and outputs an optical signal input from any of the optical transmission lines to any of second devices; Claim 4 further teaches, “…each of the plurality of second distributors includes one or more second wavelength selective optical switches;…” and a transferer configured to transfer an optical signal transmitted from a first device connected to the first optical switch to a specific second device connected to the second optical switch. and a transferer configured to transfer the optical signal transmitted from the first device connected to any of the plurality of first distributors to any of the plurality of second distributors connected to the specific second device. As the table above illustrates, all the limitations of claim 7 of the present application are taught by claim 1,4 of copending Application No. 18/699,781. Thus, claim 7 of the present application would have been obvious to one of ordinary skill in the art at the time of the invention in view of claim 1,4 of copending Application No. 18/699,781, as anticipation of all limitations is tantamount to obviousness. Claim 8 is provisionally rejected on the ground of nonstatutory obviousness-type double patenting as being unpatentable over claims 12 of copending Application No. 18/699,781 in view of Sawara et al.(JP 2017157983 A: submitted as an IDS). This is a provisional obviousness-type double patenting rejection. The following table illustrates a mapping of the limitations of claim 8 of the present application when compared against the limitations of claim 12 of copending Application No. 18/699,781. The differences have been bolded for purposes of clarity. Claim 8 of Present Application Claim 12 of copending Application No. 18/699,781 A transfer method comprising: A transfer method comprising: causing a first optical switch connected to a plurality of optical transmission lines to output an optical signal input from any of the optical transmission lines to another optical transmission line; causing a plurality of first distributors connected to a plurality of optical transmission lines to output an optical signal input from any of first devices to any of the optical transmission lines; causing a second optical switch connected to a plurality of optical transmission lines to output an optical signal input from any of the optical transmission lines to another optical transmission line; causing a plurality of second distributors connected to a plurality of optical transmission lines to output an optical signal input from any of the optical transmission lines to any of second devices; and transferring an optical signal transmitted from a first device connected to the first optical switch to a specific second device connected to the second optical switch. and transferring the optical signal transmitted from the first device connected to any of the plurality of first distributors to any of the plurality of second distributors connected to the specific second device. As the table above illustrates, the only limitations not taught by claim 12 of copending Application No. 18/699,781 is, the first distributer is “a first optical switch” and the second distributer is “a second optical switch”. However, Sawara teaches the first distributer is “a first optical switch” and the second distributer is “a second optical switch”(See Paragraph 60,61, fig. 6 i.e. the first distributer(31) is a first optical switch and the second distributer(34) is a second optical switch). Thus, claim 8 of the present application would have been obvious to one of ordinary skill in the art at the time of the invention in view of claim 12 of copending Application No. 18/699,781, as anticipation of all limitations is tantamount to obviousness. Thus, it would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to include in US App No 18/699,781, the first distributer to be a first optical switch and the second distributer to be a second optical switch, as suggested by Sawara, as this doesn’t change the overall operation of the system, and it could be used to achieve the predictable result of increasing the amount and selectivity of data transmission to a desired destination using optical switching unit. 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. Claims 1,7,8 are rejected under 35 U.S.C. 102 (a)(1) as being anticipated by Sawara et al.(JP 2017157983 A: submitted as an IDS). Considering Claim 1 Sawara discloses an optical communication device comprising: a first 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(See Paragraph 44,60,61, fig. 6 i.e. a first optical switch which is a core switching function unit(31) that is connected to a plurality of optical transmission lines(transmission lines coupling the input(301-1…301-M) to the first optical switch(31)) and outputs an optical signal input from any of the optical transmission lines(transmission lines coupling the input(301-1…301-M) to the first optical switch(31)) to another optical transmission line(transmission lines coupling the first optical switch(31) to route switching function unit(32)); 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(See Paragraph 60,65, fig. 6 i.e. a second optical switch(34) that is connected to a plurality of optical transmission lines(transmission lines between the route switching function unit(32) and the second optical switch(34)) and outputs an optical signal input from any of the optical transmission lines(transmission lines between the route switching function unit(32) and the second optical switch(34)) to another optical transmission line(transmission lines between the second optical switch(34) and output paths(302-1…302-M)); and a transferer configured to transfer an optical signal transmitted from a first device connected to the first optical switch to a specific second device connected to the second optical switch(See Paragraph 60,61, fig. 6 i.e. a transferer which is a route switching function unit(32) configured to transfer an optical signal transmitted from a first device(301-1…301-M) connected to the first optical switch(31) to a specific second device(302-1…302-M) connected to the second optical switch(34)). Claim 7 is rejected for the same reason as in claim 1. Claim 8 is rejected for the same reason as in claim 1. Allowable Subject Matter Claims 2-6 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 HIBRET A WOLDEKIDAN whose telephone number is (571)270-5145. The examiner can normally be reached 9-5:30. 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 C 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. /HIBRET A WOLDEKIDAN/ Primary Examiner, Art Unit 2635
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Prosecution Timeline

Apr 10, 2024
Application Filed
Feb 04, 2026
Non-Final Rejection — §102, §DP (current)

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
86%
Grant Probability
99%
With Interview (+13.4%)
2y 5m
Median Time to Grant
Low
PTA Risk
Based on 837 resolved cases by this examiner. Grant probability derived from career allow rate.

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