Prosecution Insights
Last updated: April 19, 2026
Application No. 18/589,217

OPTICAL ELEMENT WITH DIFFRACTIVE FOCUSING FEATURES AND DIFFRACTIVE ANTI-REFLECTION FEATURES

Non-Final OA §102§DP§Other
Filed
Mar 14, 2024
Examiner
CHIEN, LUCY P
Art Unit
2871
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
UD HOLDINGS, LLC
OA Round
1 (Non-Final)
83%
Grant Probability
Favorable
1-2
OA Rounds
2y 9m
To Grant
88%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allow Rate
745 granted / 898 resolved
+15.0% vs TC avg
Moderate +5% lift
Without
With
+5.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
34 currently pending
Career history
932
Total Applications
across all art units

Statute-Specific Performance

§103
55.9%
+15.9% vs TC avg
§102
38.7%
-1.3% vs TC avg
§112
1.3%
-38.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 898 resolved cases

Office Action

§102 §DP §Other
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 . Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claim 1 is rejected on the ground of nonstatutory double patenting as being unpatentable over claim 1 of U.S. Patent No. 12019252. Although the claims at issue are not identical, they are not patentably distinct from each other because: Claim 1 is anticipated by Claim 1 of U.S. Patent No. 12019252 Claim Rejections - 35 USC § 102 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. Claim(s) 1 is/are rejected under 35 U.S.C. 102a as being anticipated by Nakabayashi (US 8270080) Regarding Claim 1, Nakabayashi discloses (Fig. 3 to Fig. 7b) An optical element, comprising: a body (2) formed from at least one material that is transparent (made of glass and resin that are transparent to light) at a wavelength, the body (2) including a first surface (the surface facing element 4) that extends laterally over a first area (the entire area element 2 is located shown in Fig. 3), the first surface including diffractive focusing features that extend into the body (Nakabayashi discloses the diffraction grating pattern formed into the surface, the grating ridges etched into the substrate), the diffractive focusing features having a same first depth that is greater than the wavelength (seen are multi-level surface patterns (3,4) Nakabayashi teaches patterns with multiple depths engineered relative to operational wavelengths. In diffraction element design teaching depths less than λ used to shape phase and diffraction efficiencies are inherent in the surface structures)), the diffractive focusing features located in the first area to have a duty cycle (the varying ridges width) that varies over the first area, the first surface further including diffractive anti-reflection (column 3, lines 15-35, describes refractive index distribution) features that extend into the body, the diffractive anti-reflection features having a same second depth that is less than the wavelength (multi-level depths include fractional features), the diffractive anti-reflection features located in the first area such that an effective refractive index of the diffractive focusing features and the diffractive anti-reflection features, together, is less than or equal to a specified value (Nakabayashi describes controlling refractive index distribution of the optical element by forming structures that vary local optical thickness and index distribution, which effectively tunes the effective refractive index across the surface relief region.) PNG media_image1.png 274 456 media_image1.png Greyscale Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to LUCY P CHIEN whose telephone number is (571)272-8579. The examiner can normally be reached 9AM-5PM PST Monday, Tuesday, and Wednesday. 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, Michael Caley can be reached at 571-272-2286. 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. /LUCY P CHIEN/Primary Examiner, Art Unit 2871
Read full office action

Prosecution Timeline

Mar 14, 2024
Application Filed
Jan 13, 2026
Non-Final Rejection — §102, §DP, §Other (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12601944
DISPLAY MODULE, DRIVING METHOD, AND DISPLAY DEVICE
2y 5m to grant Granted Apr 14, 2026
Patent 12592204
STACKED-SCREEN DISPLAY DEVICE AND METHOD FOR CONTROLLING DISPLAY DEVICE
2y 5m to grant Granted Mar 31, 2026
Patent 12591159
TRANSPARENT DISPLAY APPARATUS
2y 5m to grant Granted Mar 31, 2026
Patent 12585049
ACHROMATIC OPTICAL RELAY ARRANGEMENT
2y 5m to grant Granted Mar 24, 2026
Patent 12585113
LAMINATED GLASS AND HEAD-UP DISPLAY SYSTEM
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
83%
Grant Probability
88%
With Interview (+5.2%)
2y 9m
Median Time to Grant
Low
PTA Risk
Based on 898 resolved cases by this examiner. Grant probability derived from career allow rate.

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