Prosecution Insights
Last updated: July 17, 2026
Application No. 18/751,478

OPTICAL FIBER SENSING SYSTEM, OPTICAL FIBER SENSING APPARATUS, AND OPTICAL FIBER SENSING METHOD

Non-Final OA §103
Filed
Jun 24, 2024
Priority
Jun 30, 2023 — JP 2023-107735
Examiner
BUTLER, KEVIN C
Art Unit
Tech Center
Assignee
NEC Corporation
OA Round
1 (Non-Final)
90%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
98%
With Interview

Examiner Intelligence

Grants 90% — above average
90%
Career Allowance Rate
827 granted / 922 resolved
+29.7% vs TC avg
Moderate +9% lift
Without
With
+8.6%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 10m
Avg Prosecution
27 currently pending
Career history
942
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
74.3%
+34.3% vs TC avg
§102
22.3%
-17.7% vs TC avg
§112
0.9%
-39.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 922 resolved cases

Office Action

§103
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 § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claim(s) 1, 5 is/are rejected under 35 U.S.C. 103 as being unpatentable over Iwano (WO-2022113252), in view of, Iwano (WO-2023209758-A1). Iwano-252 teaches: In regards to claim 1, Iwano-252 teaches an optical fiber sensing system comprising: (abstract; 200 fig. 1, ‘sensing device’, 20 fig. 2, ‘sensing device’; para(s) [0012-0028]) at least one memory configured to store an instruction group; and (502 fig. 8, ‘memory’) at least one processor configured to execute the instruction group in such a way as to (501 fig. 7, ‘processor’) control a communication unit, to which the first optical fiber or the second optical fiber is connected, in such a way as to transmit pulsed light to the connected first optical fiber or second optical fiber and also receive an optical signal from the connected first optical fiber or second optical fiber, (504, 505 fig. 7, ‘input/output interface’, ‘communication interface’; 21 fig. 2, ‘communication unit’; para(s) [0012-0028]) perform, in a state where the first optical fiber is connected to the communication unit at the first point side, first optical fiber sensing for sensing vibration applied to the optical fiber cable at the second point side, based on an optical signal received from the first optical fiber, (para(s) [0012-0028])’ The sensing device 20 can be realized by, for example, DFS.’; the vibration generating unit 32 generates vibrations having two frequencies corresponding to the latitude and longitude of the current position of the vibration generator 30. In other words, the vibration generating unit 32 generates vibration including the position information of the current position of the vibration generator 30.’) an optical fiber cable configured to contain a first optical fiber connected to a first point and a second point, and(abstract; 200 fig. 1, ‘sensing device’, 20 fig. 2, ‘sensing device’; para(s) [0012-0028]) It would have been obvious before the effective filing date of the invention for Iwano-252 to provide a sensing system to determine the desired parameters from the sensing device. Iwano-252 does state that the fibers may be adjusted to any desired configuration; however, does not show more than one, Iwano-252 does not teach: a second point, and also contain a second optical fiber; and also perform, in a state where the second optical fiber is connected to the communication unit at the first point side, second optical fiber sensing for sensing the vibration applied to the optical fiber cable at the second point side, based on an optical signal received from the second optical fiber, and determine whether the second optical fiber is connected to the first point and the second point, based on a result of the first optical fiber sensing and a result of the second optical fiber sensing. Iwano-758 teaches: also contain a second optical fiber; (10, 10-1 to 10-7 fig(s) 1, 3-4, 6-7, ‘plurality of optical fibers’, ‘optical fibers’) and also perform, in a state where the second optical fiber is connected to the communication unit at the first point side, second optical fiber sensing for sensing the vibration applied to the optical fiber cable at the second point side, based on an optical signal received from the second optical fiber, and (fig 5, 10, 10-1 to 10-7 fig(s) 1, 3-4, 6-7, ‘plurality of optical fibers’, ‘optical fibers’) determine whether the second optical fiber is connected to the first point and the second point, based on a result of the first optical fiber sensing and a result of the second optical fiber sensing. (abstract; 10, 10-1 to 10-7 fig(s) 1, 3-4, 6-7, ‘plurality of optical fibers’, ‘optical fibers’; 20, 30, 40 fig. 6, ‘sensing device’, ‘patch panel’, ‘coupler’) It would have been obvious before the effective filing date of the invention for Iwano-758 to provide a second optical fiber for a sensing system to determine the desired parameters from the sensing device. In regards to claim 5, Iwano-252 & Iwano-758 teach an optical fiber sensing system according to claim 1, (see claim rejection 1) wherein the first optical fiber is a communication fiber being used in a communication line. (Iwano-252: abstract; 200 fig. 1, ‘sensing device’, 10, 20, 21 fig. 2, ‘optical fiber’, ‘sensing device’, ‘communication unit’; para(s) [0012-0028]) Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claim(s) 6, 10 is/are rejected under 35 U.S.C. 103 as being unpatentable over Iwano (WO-2022113252), in view of, Iwano (WO-2023209758-A1). Iwano-252 teaches: In regards to claim 6, Iwano-252 teaches an optical fiber sensing apparatus comprising: (abstract; 200 fig. 1, ‘sensing device’, 20 fig. 2, ‘sensing device’; para(s) [0012-0028]) at least one memory configured to store an instruction group; and 502 fig. 8, ‘memory’) at least one processor configured to execute the instruction group in such a way as to (501 fig. 7, ‘processor’) control a communication unit, to which a first optical fiber connected to a first point and a second point, or a second optical fiber contained in the same optical fiber cable as the first optical fiber is connected, in such a way as to transmit pulsed light to the connected first optical fiber or second optical fiber and also receive an optical signal from the connected first optical fiber or second optical fiber, (504, 505 fig. 7, ‘input/output interface’, ‘communication interface’; 21 fig. 2, ‘communication unit’; para(s) [0012-0028]) perform, in a state where the first optical fiber is connected to the communication unit at the first point side, first optical fiber sensing for sensing vibration applied to the optical fiber cable at the second point side, based on an optical signal received from the first optical fiber, (para(s) [0012-0028])’ The sensing device 20 can be realized by, for example, DFS.’; the vibration generating unit 32 generates vibrations having two frequencies corresponding to the latitude and longitude of the current position of the vibration generator 30. In other words, the vibration generating unit 32 generates vibration including the position information of the current position of the vibration generator 30.’) It would have been obvious before the effective filing date of the invention for Iwano-252 to provide a sensing system to determine the desired parameters from the sensing device. Iwano-252 does state that the fibers may be adjusted to any desired configuration; however, does not show more than one, Iwano-252 does not teach: and also perform, in a state where the second optical fiber is connected to the communication unit at the first point side, second optical fiber sensing for sensing the vibration applied to the optical fiber cable at the second point side, based on an optical signal received from the second optical fiber, and determine whether the second optical fiber is connected to the first point and the second point, based on a result of the first optical fiber sensing and a result of the second optical fiber sensing. Iwano-758 teaches: and also perform, in a state where the second optical fiber is connected to the communication unit at the first point side, second optical fiber sensing for sensing the vibration applied to the optical fiber cable at the second point side, based on an optical signal received from the second optical fiber, and and (fig 5, 10, 10-1 to 10-7 fig(s) 1, 3-4, 6-7, ‘plurality of optical fibers’, ‘optical fibers’) determine whether the second optical fiber is connected to the first point and the second point, based on a result of the first optical fiber sensing and a result of the second optical fiber sensing. (abstract; 10, 10-1 to 10-7 fig(s) 1, 3-4, 6-7, ‘plurality of optical fibers’, ‘optical fibers’; 20, 30, 40 fig. 6, ‘sensing device’, ‘patch panel’, ‘coupler’) It would have been obvious before the effective filing date of the invention for Iwano-758 to provide a second optical fiber for a sensing system to determine the desired parameters from the sensing device. In regards to claim 10, Iwano-252 & Iwano-758 teach an optical fiber sensing apparatus according to claim 6, (see claim rejection 6) wherein the first optical fiber is a communication fiber being used in a communication line. (Iwano-252: abstract; 200 fig. 1, ‘sensing device’, 10, 20, 21 fig. 2, ‘optical fiber’, ‘sensing device’, ‘communication unit’; para(s) [0012-0028]) Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claim(s) 11, 15 is/are rejected under 35 U.S.C. 103 as being unpatentable over Iwano (WO-2022113252), in view of, Iwano (WO-2023209758-A1). Iwano-252 teaches: In regards to claim 11, Iwan-252 teaches an optical fiber sensing method performed by an optical fiber sensing apparatus, the method comprising: (abstract; 200 fig. 1, ‘sensing device’, 20 fig. 2, ‘sensing device’; para(s) [0012-0028]) a communication step of transmitting pulsed light to a first optical fiber connected to a first point (abstract; 200 fig. 1, ‘sensing device’, 20 fig. 2, ‘sensing device’; para(s) [0005, 0007, 0012-0028, 0031]) a sensing step of performing, in a state where the first optical fiber is connected to the optical fiber sensing apparatus at the first point side, first optical fiber sensing for sensing vibration applied to the optical fiber cable at the second point side, based on an optical signal received from the first optical fiber, (para(s) [0012-0028])’ The sensing device 20 can be realized by, for example, DFS.’; the vibration generating unit 32 generates vibrations having two frequencies corresponding to the latitude and longitude of the current position of the vibration generator 30. In other words, the vibration generating unit 32 generates vibration including the position information of the current position of the vibration generator 30.’; abstract; 200 fig. 1, ‘sensing device’, 20 fig. 2, ‘sensing device’; para(s) [0005, 0007, 0012-0028, 0031]) It would have been obvious before the effective filing date of the invention for Iwano-252 to provide a sensing system to determine the desired parameters from the sensing device. Iwano-252 does state that the fibers may be adjusted to any desired configuration; however, does not show more than one, Iwano-252 does not teach: and a second point, or to a second optical fiber contained in the same optical fiber cable as the first optical fiber, and also receiving an optical signal from the first optical fiber or the second optical fiber; and also performing, in a state where the second optical fiber is connected to the optical fiber sensing apparatus at the first point side, second optical fiber sensing for sensing the vibration applied to the optical fiber cable at the second point side, based on an optical signal received from the second optical fiber; and a determination step of determining whether the second optical fiber is connected to the first point and the second point, based on a result of the first optical fiber sensing and a result of the second optical fiber sensing. Iwano-758 teaches: and a second point, or to a second optical fiber contained in the same optical fiber cable as the first optical fiber, and also receiving an optical signal from the first optical fiber or the second optical fiber; (10, 10-1 to 10-7 fig(s) 1, 3-4, 6-7, ‘plurality of optical fibers’, ‘optical fibers’) and also performing, in a state where the second optical fiber is connected to the optical fiber sensing apparatus at the first point side, second optical fiber sensing for sensing the vibration applied to the optical fiber cable at the second point side, based on an optical signal received from the second optical fiber; and (fig 5, 10, 10-1 to 10-7 fig(s) 1, 3-4, 6-7, ‘plurality of optical fibers’, ‘optical fibers’) a determination step of determining whether the second optical fiber is connected to the first point and the second point, based on a result of the first optical fiber sensing and a result of the second optical fiber sensing. (abstract; 10, 10-1 to 10-7 fig(s) 1, 3-4, 6-7, ‘plurality of optical fibers’, ‘optical fibers’; 20, 30, 40 fig. 6, ‘sensing device’, ‘patch panel’, ‘coupler’) It would have been obvious before the effective filing date of the invention for Iwano-758 to provide a second optical fiber for a sensing system to determine the desired parameters from the sensing device. In regards to claim 15, Iwano-252 & Iwano-758 teach an optical fiber sensing method according to claim 11, (see claim rejection 11) wherein the first optical fiber is a communication fiber being used in a communication line. (Iwano-252: abstract; 200 fig. 1, ‘sensing device’, 10, 20, 21 fig. 2, ‘optical fiber’, ‘sensing device’, ‘communication unit’; para(s) [0012-0028]) Allowable Subject Matter Claim(s) 2-4, 7-9, 12-14 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. A PE2E-Search & Similarity Search was completed 06/17/2026. The recitation of the claim that was not taught in the searched references of the prior-art is: ‘calculate, when the vibration has been sensed in the first optical fiber sensing and the second optical fiber sensing, a difference between a distance on the first optical fiber specified by the first optical fiber sensing and a distance on the second optical fiber specified by the second optical fiber sensing, and ‘ in claims 2, 7, and 12. Claims 3-4 depend from claim 2, claims 8-9 depend from claim 7, and claims 13-14 depend from claim 12. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. The references cited Wu (CN-121783220-A), Mochizuki (JP-2025184204-A), Iida (WO-2025017890-A1), Itsubo (US-20240377242-A1) and Xia (US-20250055563-A1) references further describe a sensing system device, system and method as described by the claims. Any inquiry concerning this communication or earlier communications from the examiner should be directed to KEVIN C BUTLER whose telephone number is (571)270-3973. The examiner can normally be reached 9-5. 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, Stephanie E Bloss can be reached at (571)272-3555. 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. /K.C.B/Examiner, Art Unit 2852 /STEPHANIE E BLOSS/Supervisory Primary Examiner, Art Unit 2852
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Prosecution Timeline

Jun 24, 2024
Application Filed
Jun 23, 2026
Non-Final Rejection mailed — §103 (current)

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Prosecution Projections

1-2
Expected OA Rounds
90%
Grant Probability
98%
With Interview (+8.6%)
1y 10m (~0m remaining)
Median Time to Grant
Low
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