Prosecution Insights
Last updated: August 06, 2026
Application No. 18/417,108

OPTICAL SENSORS

Non-Final OA §102§103
Filed
Jan 19, 2024
Priority
Jan 31, 2023 — provisional 63/442,150
Examiner
CAPUTO, LISA M
Art Unit
2874
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Diftek Lasers Inc.
OA Round
1 (Non-Final)
31%
Grant Probability
At Risk
1-2
OA Rounds
2m
Est. Remaining
33%
With Interview

Examiner Intelligence

Grants only 31% of cases
31%
Career Allowance Rate
16 granted / 52 resolved
-37.2% vs TC avg
Minimal +2% lift
Without
With
+2.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
16 currently pending
Career history
73
Total Applications
across all art units

Statute-Specific Performance

§101
4.3%
-35.7% vs TC avg
§103
48.9%
+8.9% vs TC avg
§102
28.2%
-11.8% vs TC avg
§112
16.0%
-24.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 52 resolved cases

Office Action

§102 §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 . Election/Restrictions Applicant’s election without traverse of Group I, claims 1-25, in the reply filed on May 9, 2026 is acknowledged. Claims 26-27 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on May 9, 2026. 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)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1, 9-11, 13, 17-22, and 24-25 is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Doneen et al. (US Patent No. 4,906,837, from hereinafter “Doneen”). Regarding claims 1, 9-11, 13, 17-22, and 24-25, Doneen teaches a multi-channel waveguide optical sensor. Doneen teaches an optical sensor for sensing a target, the optical sensor comprising: an input optical conduit, an output optical conduit, and an optical field generator optically coupled to the input optical conduit and the output optical conduit; the input optical conduit to receive an input light and to guide the input light towards the optical field generator; the optical field generator to: receive the input light from the input optical conduit; generate based on the input light an optical field extending at least partially outside of the optical field generator to interact with the target to generate an altered light, the target positioned outside the optical field generator; and guide the altered light to the output optical conduit; and the output optical conduit to receive the altered light from the optical field generator when it is taught An optical sensor for monitoring the motion and/or position of a moving element. One preferred embodiment of the optical sensor (50) includes a soda lime silicate glass substrate (52) in which a plurality of transmit waveguide channels (54), (56), and (58) are formed by an ion diffusion process. The waveguide conveys light pulses to a plurality of read ports (60), (62), and (64) through which the pulses are emitted to illuminate reflective areas formed on the surface of an adjacent moving element (59). Pulses of light reflected back from the reflective areas re-enter the read ports, propagating in the opposite direction through combination transmit/receive portions of the optical waveguide channels (72), (74), and (76), combining in a common receive waveguide channel (78). The reflected pulses are conveyed through a receive optical fiber (80) to a fiber-optic receiver (170), where they are converted to electrical pulses, which are decoded to provide an indication of the speed and/or position of the moving element (see Figure 2, abstract). 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. Claim(s) 2-8 and 23 are rejected under 35 U.S.C. 103 as being unpatentable over Doneen in view of Hanley et al. (USPGPUB 20100016845, from hereinafter “Hanley”). Regarding claims 2-8 and 23, Doneen fails to teach the particulars of the capillary tubes. Hanley teaches in Figure 4, wherein the optical field generator comprises a capillary having an outer surface and a capillary tube, the capillary having a first end optically coupled to the input optical conduit and a second end opposite the first end, the second end optically coupled to the output optical conduit, the capillary to generate the optical field extending outside of the outer surface of the capillary (see Figures 3-4, paragraphs 26-31). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to employ the capillaries as described so that the light is able to be guided efficiently in environmental testing. Allowable Subject Matter Claims 12 and 14-16 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 LISA M CAPUTO whose telephone number is (571)272-2388. The examiner can normally be reached Monday-Friday 9-5 EST. 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, Uyen-Chau Le can be reached at 571-272-2397. 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. /LISA M CAPUTO/Primary Patent Examiner, Art Unit 2874
Read full office action

Prosecution Timeline

Jan 19, 2024
Application Filed
Jul 15, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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WAVEGUIDE LINE ELECTRODE STRUCTURE AND ELECTRO-OPTIC MODULATOR
2y 6m to grant Granted Jul 14, 2026
Patent 12669655
OPTICAL CONNECTOR
2y 6m to grant Granted Jun 30, 2026
Patent 12656554
POLARIZATION CONTROL IN OPTICAL COUPLERS
2y 5m to grant Granted Jun 16, 2026
Patent 12631909
THERMO-OPTIC PHASE MODULATION MODULE AND OPTICAL MODULATOR
2y 4m to grant Granted May 19, 2026
Patent 12596231
SINGLE MODE WIDEBAND POLARIZATION MAINTAINING FIBER COUPLER
2y 2m to grant Granted Apr 07, 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
31%
Grant Probability
33%
With Interview (+2.3%)
2y 8m (~2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 52 resolved cases by this examiner. Grant probability derived from career allowance rate.

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