Prosecution Insights
Last updated: July 17, 2026
Application No. 18/089,140

POLYIMIDE-BASED COMPOSITION AND POLYIMIDE FILM

Final Rejection §102
Filed
Dec 27, 2022
Priority
Dec 29, 2021 — RE 10-2021-0191699
Examiner
EGWIM, KELECHI CHIDI
Art Unit
1762
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Dongjin Semichem Co., Ltd.
OA Round
2 (Final)
70%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
84%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allowance Rate
557 granted / 797 resolved
+4.9% vs TC avg
Moderate +14% lift
Without
With
+13.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
39 currently pending
Career history
845
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
42.6%
+2.6% vs TC avg
§102
49.5%
+9.5% vs TC avg
§112
2.9%
-37.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 797 resolved cases

Office Action

§102
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 . Election/Restrictions Claims 14-17 remain withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected invention, there being no allowable generic or linking claim. 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) 1-13 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Becker et al. [“Para-linked aromatic poly(amic ethyl esters) precursors to rodlike aromatic polyimides”, Mater. Dep., Univ. California, Santa Barbara, CA, 93106, USA. Macromolecules (1992), 25 (25), 6784-90]. In the entire article, Becker et al. teach a composition comprising a precursor polyamides para-linked aromatic poly(amic Et esters) prepd. from 2,o-bis (ethoxycarbonyl) terephthaloyl chloride and several substituted 1,4-diaminobenzene and noncoplanar 4,4'-diaminobiphenylene derivatives., in solvents such as DMF or N-methylpyrrolidinone (NMP), wherein the precursor polyamides are consistent with the Formulas 1-3 (See below): PNG media_image1.png 272 410 media_image1.png Greyscale . Thus, the requirements for rejection under 35 U.S.C. 102(a)(1) are met. Response to Arguments Applicant's arguments filed 2/05/2026 have been fully considered but they are not persuasive. Regarding Becker et al., while applicant argues that the present polyimide-based composition “is copolymerized using three different diamine monomers, namely those represented by Chemical Formulas 1 to 3”, the Examiner understands the language in the claims, “the polyimide precursor comprising repeating units represented by Chemical Formulas 1 to 3” as claiming the repeat units represented by Chemical Formulas 1 to 3 in the alternative. While the claims require Y1 to Y3 to represent different moieties, there is no language in the claims requiring each of the monomers of Formulas 1 to 3 in the polymer, so long as one of the repeating units represented by Chemical Formulas 1 to 3 is present. Contrary to applicants arguments, there is no language in the claim requiring the polyimide precursor to be a copolymer, let alone a terpolymer as argued by applicant. 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). THIS ACTION IS MADE FINAL. 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 KELECHI CHIDI EGWIM whose telephone number is (571)272-1099. The examiner can normally be reached M-Th 9-7. 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, Robert Jones can be reached at (571) 270-7733. 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. /KELECHI C EGWIM/Primary Examiner, Art Unit 1762 KCE
Read full office action

Prosecution Timeline

Dec 27, 2022
Application Filed
Nov 10, 2025
Non-Final Rejection mailed — §102
Feb 05, 2026
Response Filed
Jun 05, 2026
Final Rejection mailed — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12679964
TETRAISOPENTYL ESTERS OF BUTANETETRACARBOXYLIC ACID, PRODUCTION THEREOF AND USE THEREOF AS PLASTICIZERS
2y 9m to grant Granted Jul 14, 2026
Patent 12649869
METHOD FOR PRODUCING A PRESSURE-SENSITIVE ADHESIVE BASED ON AN ALKOXYLATED, IN PARTICULAR ETHOXYLATED, SILANE-CONTAINING POLYMER, PRESSURE-SENSITIVE ADHESIVE PRODUCED ACCORDING TO THIS METHOD, AND USE THEREOF
4y 6m to grant Granted Jun 09, 2026
Patent 12643989
ANTIMICROBIAL MEDICAL GLOVE
4y 5m to grant Granted Jun 02, 2026
Patent 12630660
AQUEOUS DISPERSION OF POLYMER PARTICLES AND USES THEREOF AS AN ADHESIVE COMPOSITION
4y 2m to grant Granted May 19, 2026
Patent 12617884
ORGANIC FINE PARTICLE
4y 1m to grant Granted May 05, 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
70%
Grant Probability
84%
With Interview (+13.9%)
3y 1m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 797 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