Prosecution Insights
Last updated: April 19, 2026
Application No. 18/619,829

OPTICAL DEVICE

Non-Final OA §102§112
Filed
Mar 28, 2024
Examiner
STAHL, MICHAEL J
Art Unit
2874
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
TDK Corporation
OA Round
1 (Non-Final)
90%
Grant Probability
Favorable
1-2
OA Rounds
2y 2m
To Grant
97%
With Interview

Examiner Intelligence

Grants 90% — above average
90%
Career Allow Rate
1122 granted / 1246 resolved
+22.0% vs TC avg
Moderate +7% lift
Without
With
+7.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
36 currently pending
Career history
1282
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
22.4%
-17.6% vs TC avg
§102
41.8%
+1.8% vs TC avg
§112
29.8%
-10.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1246 resolved cases

Office Action

§102 §112
Notice of Pre-AIA or AIA Status The present application, filed after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Claim Objection (Informality) Claim 26 is objected to because it is missing "is" between "portion" and "formed" in line 2. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. Claims 14-26 are rejected under 35 U.S.C. 112(b) as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor regards as the invention. Claim 14 is indefinite because it recites "an optical waveguide disposed along the main surfaces of the substrate". Since the main surfaces are on opposite sides of the substrate according to line 2, it is not apparent how a single optical waveguide could be disposed along both of the main surfaces simultaneously. This also appears to be inconsistent with the specification and drawings. Claims 15-26 are indefinite by dependence from claim 14. Claim 14 could be made definite by replacing "along the main surfaces" in line 4 with "along a first main surface of said main surfaces". For the purpose of comparison with prior art in this action, it will be assumed that claim 14 includes this change. Claims 20, 22, and 26 are further indefinite because each claim recites "the main surface" but does not identify which one of the two main surfaces from claim 14 is meant. In conjunction with the amendment proposed above for claim 14, claims 20, 22, and 26 could be made definite by replacing "the main surface" with "said first main surface". For the purpose of comparison with prior art in this action, it will be assumed that claims 20, 22, and 26 include this change. 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 14-15, 22, and 26 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by US 2014/0286607 A1. Claim 14: '607 discloses an optical device comprising (see mainly figs. 1 and 3): a substrate 15 having a pair of main surfaces (upper and lower surfaces) opposite each other in a first direction, an end surface (left surface facing gap W in fig. 3) adjacent to the main surfaces, and a pair of side surfaces (corresponding to left and right major surfaces in fig. 1), and an optical waveguide 3 disposed along a first main surface of said main surfaces of the substrate and having a light incidence end or a light exit end 3a in a direction of a plane where the end surface is located, wherein, an adhesive 12 for connection is coated on the end surface of the substrate (at adhesive face 14a), and at least one stepped portion (having depth D and including recess 7) is formed between the optical waveguide and the adhesive. Claim 15: The stepped portion comprises: a first stepped portion 7 formed at the end surface of the substrate in a manner that one end is close to one of the side surfaces of the substrate and the other end is close to the other one of the side surfaces of the substrate (recess 7 extends across the width of the device as shown in fig. 1). Claim 22: Referring to the fig. 4 variant, an end portion 3a of the optical waveguide is formed to be closer to an inner side than an end portion of the substrate when viewed from the first direction (note difference S), and the first stepped portion is exposed at said first main surface of the substrate (i.e. the upper surface). In fig. 4 bodies 5 and 6 taken together constitute the substrate relative to the optical waveguide (as noted in [0066] with regard to fig. 3, this is equivalent to a single-body substrate 15). Claim 26: The first stepped portion is formed at the end surface of the substrate 15 in a manner substantially parallel to said first main surface of the substrate. Allowable Subject Matter Claims 16-21 and 23-25 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 base claims 14-15 and all applicable intervening claims, and if they are suitably amended to overcome the pertinent indefiniteness rejections above. Regarding claim 16, the applied '607 reference does not disclose or suggest further including a second stepped portion at the end surface of the substrate, such that the second stepped portion has a depth different from that of the first portion. Although '607 appears to contemplate a second stepped portion (upper instance of 30) in fig. 9, it is not provided at the end surface of the substrate (defined by bodies 5 and 6) and it has the same depth as the first (i.e. lower) stepped portion 30 according to [0140]-[0141]. All of claims 17-21 and 23-25 ultimately depend from claim 16. Contact Information Examiner: 571-272-2360 Examiner's direct supervisor: 571-272-2397 Official correspondence by fax: 571-273-8300 Information regarding the status of an application may be obtained from Patent Center. Should you have questions about Patent Center, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). /Michael Stahl/Primary Examiner, Art Unit 2874
Read full office action

Prosecution Timeline

Mar 28, 2024
Application Filed
Feb 27, 2026
Non-Final Rejection — §102, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12596234
OPTICAL MODULE AND OPTICAL CONNECTOR CABLE
2y 5m to grant Granted Apr 07, 2026
Patent 12591093
FACILITATING OPTICAL COUPLING AND BEAM COLLIMATION IN PHOTONIC INTEGRATED CIRCUITS
2y 5m to grant Granted Mar 31, 2026
Patent 12585117
WAVEGUIDE FOR AUGMENTED REALITY OR VIRTUAL REALITY DISPLAY
2y 5m to grant Granted Mar 24, 2026
Patent 12587002
CONDUIT AND METHOD FOR LAYING CABLE
2y 5m to grant Granted Mar 24, 2026
Patent 12585061
LIGHT-EMITTING MODULE
2y 5m to grant Granted Mar 24, 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
90%
Grant Probability
97%
With Interview (+7.4%)
2y 2m
Median Time to Grant
Low
PTA Risk
Based on 1246 resolved cases by this examiner. Grant probability derived from career allow rate.

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