Prosecution Insights
Last updated: April 19, 2026
Application No. 18/039,774

METHOD FOR PREPARING DEUTERATED ANTHRACENE COMPOUND, REACTION COMPOSITION, DEUTERATED ANTHRACENE COMPOUND AND COMPOSITION

Non-Final OA §102
Filed
Jun 01, 2023
Examiner
YOO, SUN JAE
Art Unit
1621
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
LG Chem, Ltd.
OA Round
1 (Non-Final)
71%
Grant Probability
Favorable
1-2
OA Rounds
2y 11m
To Grant
71%
With Interview

Examiner Intelligence

Grants 71% — above average
71%
Career Allow Rate
869 granted / 1225 resolved
+10.9% vs TC avg
Minimal +0% lift
Without
With
+0.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
43 currently pending
Career history
1268
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
14.6%
-25.4% vs TC avg
§102
29.8%
-10.2% vs TC avg
§112
32.5%
-7.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1225 resolved cases

Office Action

§102
DETAILED ACTION Notice of Pre-AIA or AIA Status 1. 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 2. Applicant’s election without traverse of Group I, and species shown below, in the reply filed on December 19, 2025 is acknowledged. PNG media_image1.png 580 592 media_image1.png Greyscale PNG media_image2.png 394 448 media_image2.png Greyscale 3. Examination followed guidelines provided by MPEP 803.02. The elected species appeared to be novel and nonobvious over the prior art. Therefore, the search and examination was extended. Prior art was found that anticipates the claims with respect to a nonelected species. The Markush claims were rejected and claims to nonelected species were withdrawn from further consideration. The claims were searched to the extent of the elected species, the full scope of claims 7, 8 and 10-12 and additionally to the nonelected species shown below. 4. Claims 5 and 13-20 withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected subject matter. Election was made without traverse in the reply filed on December 19, 2025. Status of Claims 5. Claims 1 and 3-20 are pending. Claims 1, 3, 4 and 6-12 encompass the elected species and are within the elected Group I. Claim 1 is independent. Claims 5 and 13-20 are withdrawn. Priority 6. Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement 7. The information disclosure statements (dated June 27, 2024 and May 7, 2024 and June 1, 2023) were in compliance with the provisions of 37 CFR 1.97 and 37 CFR 1.98. The statements were considered. Signed copies of form 1449 are enclosed herewith. Claim Objections 8. Claims 7, 8 and 10-12 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. 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. 9. Claim(s) 1, 3, 4, 6 and 9 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Fleming et al. as evidenced by Deuterium-Wikipedia. The reference has a publication date of 1974 which antedates the present claims having an effective filing date of January 21, 2022 and priority claim to foreign application dated January 22, 2021. The reference teaches the following reaction: PNG media_image3.png 404 352 media_image3.png Greyscale PNG media_image4.png 194 358 media_image4.png Greyscale PNG media_image5.png 22 289 media_image5.png Greyscale Therefore, the reference teaches the preparation of a deuterated anthracene compound Chemical Formula 2 wherein Ar1=D (natural abundance including all isotopes having b = 1-8) – Claim 4, by reacting a halogenated benzene having at least one deuterium (natural abundance) at various positions including d5. Ar2=H/D (natural abundance). Claims 1, 3 The reference teaches using a halogen supplying agent (compound 13) to prepared the compound of formula (5) before the synthesizing of the deuterated anthracene compound. Claim 6. The reference teaches the synthesizing of Chemical Formula 2 (anthracene compound) using a solution comprising halogenated benzene-d5 (natural abundance) which is compound 13, the compound of Chemical formula 1 (corresponds to 4 in the prior art), 2,2,6,6-tetramethylpiperidine (compound 15 in the prior art reference), an alkyllithium (BuLi in the prior art), and an ether based solvent (THF). Claim 9. It is noted that deuterium exists in natural abundance as evidenced by Deuterium – Wikipedia. Therefore, the limitations of claims 1, 3,4, 6 and 9 are met by Fleming et al. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SUN JAE YOO whose telephone number is (571)272-9074. The examiner can normally be reached Mon-Fri 8-5. 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. 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. /SUN JAE YOO/Primary Examiner, Art Unit 1621
Read full office action

Prosecution Timeline

Jun 01, 2023
Application Filed
Feb 25, 2026
Non-Final Rejection — §102
Apr 08, 2026
Interview Requested

Precedent Cases

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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
71%
Grant Probability
71%
With Interview (+0.4%)
2y 11m
Median Time to Grant
Low
PTA Risk
Based on 1225 resolved cases by this examiner. Grant probability derived from career allow rate.

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