Prosecution Insights
Last updated: September 17, 2026
Application No. 18/639,424

OPTICAL FIBER ACCESSORY

Non-Final OA §103
Filed
Apr 18, 2024
Priority
Dec 22, 2023 — TW 112214057
Examiner
LE, UYEN CHAU N
Art Unit
2874
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Gloriole Electroptic Technology Corp.
OA Round
2 (Non-Final)
22%
Grant Probability
At Risk
2-3
OA Rounds
9m
Est. Remaining
14%
With Interview

Examiner Intelligence

Grants only 22% of cases
22%
Career Allowance Rate
8 granted / 36 resolved
-45.8% vs TC avg
Minimal -9% lift
Without
With
+-8.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
21 currently pending
Career history
77
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
49.8%
+9.8% vs TC avg
§102
29.1%
-10.9% vs TC avg
§112
17.9%
-22.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 36 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 . Response to Arguments Applicant’s arguments, see page 5, 1st paragraph, filed 06/29/2026, with respect to the rejection(s) of claim(s) 1 under 35 U.S.C. 102(a)(1) have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new ground(s) of rejection is made in view of Ikeya et al. (KR 20140001151 A) and Kim (KR 20210076352 A). This action is therefore made Non-Final. In response to applicant's argument that the references fail to show certain features of the invention, it is noted that the features upon which applicant relies (i.e., the rear housing sleeve can be detachably mounted on the front housing or a structure for preventing rotation and adjusting angles, nor does it feature a detachable design (page 5, 1st and 2nd paragraphs)) are not recited in the rejected claim(s). Although the claims are interpreted in light of the specification, limitations from the specification are not read into the claims. See In re Van Geuns, 988 F.2d 1181, 26 USPQ2d 1057 (Fed. Cir. 1993). It is further noted that “the rear housing sleeve can be detachably mounted on the front housing” is not disclosed in the specification and/or drawings. 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. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claim(s) 1 is/are rejected under 35 U.S.C. 103 as being unpatentable over Ikeya et al. (KR 20140001151 A). Ikeya et al. discloses an optical fiber accessory comprising a front housing (17 and 19) defining two insertion slots extending in a front-rear direction and spaced apart from each other in a first direction perpendicular to the front-rear direction (slots to receive fibers 33; fig. 1), and two core slots extending in the front-rear direction and being respectively in spatial communication with said insertion slots (inherently to receive ferrules 3 and 5/ferrule assembly 27; fig. 3); a rear housing sleeve (15 and 21) sleeved on a rear end of said front housing and defining a receiving space in spatial communication with said core slots (figs. 1-3); and a loopback module (13) disposed in said rear housing sleeve (15), and including two ferrules (3 and 5) fixed onto said rear housing sleeve (21) and spaced apart from each other in the first direction, and an optical fiber loop having two ends respectively connected to said ferrules (3 and 5/ferrule assembly 27) and disposed in said receiving space, said ferrules projecting toward said front housing in the front-rear direction and extending respectively into said core slots (figs. 1-4); wherein said rear housing sleeve (15 and 21) includes an outer housing wall defining said receiving space (fig. 3), and plurality of clamping blocks (23/25) disposed in pairs (recess and protrude) in said receiving space and protruding from an inner surface of said outer housing wall (figs. 7-8), said pairs of said clamping blocks being spaced apart from each other in the first direction, and respectively clamping said ferrules of said loopback module (figs. 7-8), wherein said clamping blocks of a same pair are spaced apart in a second direction that is perpendicular to the first direction and the front-rear direction, so as to clamp a corresponding one of said ferrules of said loopback module (figs. 7-8), wherein each of said clamping blocks of said rear housing sleeve is formed with a limiting groove (23) that is recessed inwardly in the second direction, each of said limiting grooves extending in the front-rear direction, said limiting grooves of said clamping blocks of said same pair are configured for engagement with said corresponding one of said ferrules (figs. 7-8), and wherein said front housing (17) includes a surrounding wall, an end wall connected to a rear end of said surrounding wall and cooperating with said surrounding wall to define said insertion slots, and an extension housing (19) extending from said end wall in the front-rear direction toward said rear housing sleeve and connected to said outer housing wall of said rear housing sleeve, a rear end of said extension housing (19) being sleeved by said outer housing wall of said rear housing sleeve (21). Although Ikeya et al. does not explicitly teach four clamping blocks, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have four clamping blocks arranged in the rear housing of Ikeya et al. since such modification would have been an obvious design variation, well within the ordinary skill in the art, for securely holding the ferrules. Iketani et al. further discloses ferrules (3 and 5/ferrule assembly 27) are extending in said extension housing, but does not explicitly teach said extension housing defining two positioning grooves that are respectively in spatial communication with said core slots and that face said rear housing sleeve, each of said positioning grooves having a polygonal shape, said positioning grooves respectively permitting said ferrules to be engaged therein. However, having polygonal shaped grooves for positioning the ferrules is well-known in the art and would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have four clamping blocks arranged in the rear housing of Iketani et al. since such modification would have been an obvious design variation, well within the ordinary skill in the art, for securely holding the ferrules. Claim(s) 1 and 7-9 is/are rejected under 35 U.S.C. 103 as being unpatentable over Kim (KR 20210076352 A). Re claim 1, Kim discloses an optical fiber accessory comprising a front housing (see annotated fig. 4 below) defining two insertion slots extending in a front-rear direction and spaced apart from each other in a first direction perpendicular to the front-rear direction (slots to receive ferrules 100; fig. 4), and two core slots extending in the front-rear direction and being respectively in spatial communication with said insertion slots (optical line 200); a rear housing sleeve (420) sleeved on a rear end (410) of said front housing and defining a receiving space in spatial communication with said core slots (fig. 4); and a loopback module (421) disposed in said rear housing sleeve (420), and including two ferrules (100/200) fixed onto said rear housing sleeve (420) and spaced apart from each other in the first direction, and an optical fiber loop having two ends respectively connected to said ferrules (100/200) and disposed in said receiving space, said ferrules projecting toward said front housing in the front-rear direction and extending respectively into said core slots (figs. 3-4); wherein said rear housing sleeve (420) includes an outer housing wall defining said receiving space (fig. 4), and clamping blocks (see annotated fig. 4 below) disposed in pairs (one on each side of ferrule/optical line 200) in said receiving space and protruding from an inner surface of said outer housing wall (fig. 4), said pairs of said clamping blocks being spaced apart from each other in the first direction, and respectively clamping said ferrules of said loopback module (fig. 4), wherein each of said clamping blocks of said rear housing sleeve is formed with a limiting groove (to hold 200) that is recessed inwardly in the second direction, each of said limiting grooves extending in the front-rear direction, said limiting grooves of said clamping blocks of said same pair are configured for engagement with said corresponding one of said ferrules (fig. 4), and wherein said front housing includes a surrounding wall, an end wall (see annotated fig. 4 below) connected to a rear end of said surrounding wall and cooperating with said surrounding wall to define said insertion slots, and an extension housing (see annotated fig. 4 below) extending from said end wall in the front-rear direction toward said rear housing sleeve and connected to said outer housing wall of said rear housing sleeve (420), a rear end of said extension housing being sleeved by said outer housing wall of said rear housing sleeve (420), said extension housing defining two positioning grooves (holding 200) that are respectively in spatial communication with said core slots and that face said rear housing sleeve. Kim fails to teach each of said positioning grooves having a polygonal shape, said positioning grooves respectively permitting said ferrules to be engaged therein, and said clamping blocks of a same pair are spaced apart in a second direction that is perpendicular to the first direction and the front-rear direction, so as to clamp a corresponding one of said ferrules of said loopback module. PNG media_image1.png 297 561 media_image1.png Greyscale However, having polygonal shaped grooves for positioning the ferrules is well-known in the art and would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have four clamping blocks arranged in the rear housing of Kim since such modification would have been an obvious design variation, well within the ordinary skill in the art, for securely holding the ferrules. Further, arranging clamping blocks of a same pair are spaced apart in a second direction that is perpendicular to the first direction and the front-rear direction is merely a rearrangement of parts without modifying the operation of a device an obvious design variation, has been held to be an obvious matter of design choice. In re Kuhle, 526 F.2d 553, 188 USPQ 7 (CCPA 1975) Re claim 7, Kim discloses the optical fiber accessory as claimed in claim 1, wherein each of said ferrules (100/200) of said loopback module includes a core tubular portion clamped by a corresponding one pair of said clamping blocks, a positioning portion disposed on a front end of said core tubular portion and engaging a corresponding one of said positioning grooves (holding 200), and a core head portion extending forwardly from said positioning portion in the front-rear direction and into a corresponding one of said core slots (see annotated fig. 4 above). Re claim 8, Kim discloses the optical fiber accessory as claimed in claim 1, wherein said front housing further includes two connecting tube walls projecting from said end wall and respectively located in said insertion slots, each of said core slots extending from a corresponding one of said connecting tube walls into said extension housing in the front-rear direction, and being connected to said corresponding one of said positioning grooves (holding 200) (see annotated fig. 4 above). Re claim 9, Kim discloses the optical fiber accessory as claimed in claim 1, wherein said loopback module further includes two tubular sleeves respectively inserted into said core slots of said front housing and permitting said ferrules to be inserted therein, respectively (see annotated fig. 4 above). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Larkin (US 9709755 B2 – fig. 5B) and Nolan (US 6454464 B1 – figs. 13-15) discloses a fiber loopback plug. Xu et al. (TW M639940 U) discloses an optical fiber accessory. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Any inquiry concerning this communication or earlier communications from the examiner should be directed to Uyen-Chau N. Le whose telephone number is (571)272-2397. The examiner can normally be reached Monday-Friday, 9:00am-5:30pm. 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, Kiesha R. Bryant can be reached at (571) 272-3606. 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. /UYEN CHAU N LE/Supervisory Patent Examiner, Art Unit 2874
Read full office action

Prosecution Timeline

Apr 18, 2024
Application Filed
Mar 31, 2026
Non-Final Rejection mailed — §103
Jun 29, 2026
Response Filed
Sep 10, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12736750
METHOD AND SYSTEM FOR ALIGNING AND SPLICING POLARIZATION MAINTAINING FIBERS
4y 4m to grant Granted Sep 15, 2026
Patent 12638634
ARCHITECTURE FOR ELECTROMAGNETIC WAVEGUIDE
4y 1m to grant Granted May 26, 2026
Patent 12631834
OPTICAL TRANSMISSION DEVICE AND COUPLING METHOD THEREOF
3y 6m to grant Granted May 19, 2026
Patent 12601877
MULTIPURPOSE FIBER-OPTIC CONNECTOR AND FIBER-OPTIC ADAPTER
3y 2m to grant Granted Apr 14, 2026
Patent 12601883
OPTICAL FIBER RIBBON AND SLOTLESS OPTICAL CABLE
2y 3m to grant Granted Apr 14, 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

2-3
Expected OA Rounds
22%
Grant Probability
14%
With Interview (-8.6%)
3y 1m (~9m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 36 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