Prosecution Insights
Last updated: August 14, 2026
Application No. 18/698,915

OPTICAL CONNECTOR

Final Rejection §102§103
Filed
Apr 05, 2024
Priority
Oct 13, 2021 — JP 2021-167986 +1 more
Examiner
WONG, ERIC K
Art Unit
2874
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Sumitomo Electric Industries Ltd.
OA Round
2 (Final)
84%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
92%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allowance Rate
782 granted / 933 resolved
+15.8% vs TC avg
Moderate +8% lift
Without
With
+7.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
34 currently pending
Career history
973
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
52.3%
+12.3% vs TC avg
§102
38.9%
-1.1% vs TC avg
§112
3.5%
-36.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 933 resolved cases

Office Action

§102 §103
DETAILED ACTION Response to Arguments Applicant’s arguments with associated claim amendments, filed 4/14/2026, have been fully considered and are persuasive. Therefore, the prior rejections have been withdrawn. However, upon further consideration, a new ground(s) of rejection is made in view of US 2020/0166715 to Shimakawa et al. Applicant’s arguments relate to newly clarified limitations regarding the reference surfaces and the planar surfaces that are parallel with a flange. These elements appear to be disclosed by Shimikawa in figures 5-6 and 11. 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. Claim(s) 1-2 and 4-7 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Shimikawa. Shimikawa discloses in the abstract and figures, an optical connector comprising: a glass fiber (F) and a resin coating covering the glass (film F2), a front end portion (towards F1 in figure 8); a rear end portion (end towards 7 in figure 8) located on a side opposite to the front end portion (figure 8); and a ferrule assembly (2) having a ferrule fixed to a tip end portion (2a) and a holding portion (23; figure 9) to which a rear end portion of the ferrule is fixed and which is provided with a flange (3); a housing having an inner wall surface that defines an internal space in which at least the holding portion of the ferrule assembly is accommodated, a flat surface that constitutes a part of the inner wall surface and is provided at a position facing a part of an outer peripheral surface of the flange, and a positioning portion that limits movement of the holding portion in the internal space (figures 11-12 show how the holding portion secures the ferrule in the housing); and an elastic member (5) that biases the flange toward the positioning portion, wherein the reference surface includes two contact parts (surfaces to the left and right of 23k in figure 11) provided apart from each other by a predetermined distance (the area bounded by spring 23k) and restricting a rotational direction of a flange as a result of the planar surface of the flange being brought into parallel contact with the planar surface of the inner wall surface with the planar surface of the flange contacting the two contact parts (when the flange is assembled with the provided spring cutout portion that resides within a channel that creates two contact points, the flange cannot rotate). As to claim 2, the reference surface has a recessed part (23k) between the two flat reference parts. As to claim 4, the claim recites a general “floating” terminology defined as the position changes as the ferrule is pushed through. Figure 8 shows some degree of movement and the spring allows for movement in the longitudinal direction. As to claim 5, the outer shape of the flange is quadrangular (figure 11). As to claim 6, an outer portion is curved (unlabeled corners are curved in figure 11). As to claim 7, a multicore fiber is disclosed (paragraph 87). As to claim 8, the “line” extending along the reference surface coincides with the flange (figure 11). PNG media_image1.png 508 467 media_image1.png Greyscale Claim Rejections - 35 USC § 103 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 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) 3 is/are rejected under 35 U.S.C. 103 as being unpatentable over Shimikawa in view of Inagaki. Shimikawa fails to disclose the recessed reference surface with corresponding projection. Shimikawa does disclose two different spring portions (23p and 23n) which project outwardly when viewed from a front view such as in figure 10. For purposes of examination and to expedite prosecution, Examiner will interpret the projection to mean more than this mere stepped area of the spring in the above view with a notch added. It is noted that such alignment structures are common in the art. Inagaki discloses such a well known recessed surface with projections (figure 4A). PNG media_image2.png 211 404 media_image2.png Greyscale It would have been obvious to one having ordinary skill in the art to add recessed portions with corresponding projections as taught by Inagaki to lock a flange’s spring in Shimikawa in place to prevent misalignment. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Eric K Wong whose telephone number is (571)272-2363. The examiner can normally be reached M-Tu, Th-F 8A-6P. 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, Thomas Hollweg can be reached at 571-270-1739. 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. ERIC K. WONG Primary Examiner Art Unit 2874 /Eric Wong/Primary Examiner, Art Unit 2874
Read full office action

Prosecution Timeline

Apr 05, 2024
Application Filed
Jan 15, 2026
Non-Final Rejection mailed — §102, §103
Apr 14, 2026
Response Filed
Jun 17, 2026
Final Rejection mailed — §102, §103
Jul 09, 2026
Interview Requested
Jul 31, 2026
Examiner Interview Summary
Jul 31, 2026
Applicant Interview (Telephonic)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12704684
IMAGE DISPLAY APPARATUS AND IMAGE DISPLAY METHOD
2y 10m to grant Granted Aug 11, 2026
Patent 12687673
MULTICORE OPTICAL FIBER WITH REDUCED CROSS TALK
2y 11m to grant Granted Jul 21, 2026
Patent 12674939
LIGHT GUIDE PLATE
3y 0m to grant Granted Jul 07, 2026
Patent 12669644
DESIGNS OF THERMAL INSULATION FOR MICRO-RING RESONATOR (MRR) IN ON-CAVITY PIC (OCPIC) TO ACHIEVE EFFECTIVE THERMAL TUNING
4y 3m to grant Granted Jun 30, 2026
Patent 12645027
METHODS FOR PRODUCING HOLLOW-CORE OPTICAL FIBERS
2y 10m to grant Granted Jun 02, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

3-4
Expected OA Rounds
84%
Grant Probability
92%
With Interview (+7.9%)
2y 2m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 933 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month