Prosecution Insights
Last updated: October 04, 2026
Application No. 18/866,823

USE OF PHENOLIC ACIDS DERIVATIVES IN TREATING ISCHEMIC STROKE

Non-Final OA §103§112
Filed
Nov 18, 2024
Priority
May 18, 2022 — CN 202210599845.1 +1 more
Examiner
CHICKS, ASHLI ARIANA
Art Unit
Tech Center
Assignee
Lanzhou University
OA Round
1 (Non-Final)
61%
Grant Probability
Moderate
1-2
OA Rounds
1y 5m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 61% of resolved cases
61%
Career Allowance Rate
57 granted / 94 resolved
+0.6% vs TC avg
Strong +50% interview lift
Without
With
+50.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
52 currently pending
Career history
120
Total Applications
across all art units

Statute-Specific Performance

§101
1.5%
-38.5% vs TC avg
§103
30.0%
-10.0% vs TC avg
§102
20.4%
-19.6% vs TC avg
§112
24.0%
-16.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 94 resolved cases

Office Action

§103 §112
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 . Claim Status Claims 1–10 are pending. Claims 1–10 are rejected. 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. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claim 9 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 9 recites the limitation "the pro-inflammatory factor" in lines 1-2. There is insufficient antecedent basis for this limitation in the claim. 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. Claim(s) 1-10 are rejected under 35 U.S.C. 103 as being unpatentable over WO2004019882A2 by Grennfield et al. as evidenced by Sarkar, Sibani, et al. "Cerebral ischemic stroke: cellular fate and therapeutic opportunities." Frontiers in Bioscience-Landmark 24.3 (2019): 415-430. Determining the scope and contents of the prior art. (See MPEP § 2141.01) The prior art teaches “methods of screening for compounds that modulate TAFIa activity, compounds, and methods of using the compounds” (title). Grennfield et al. disclose a method of treating a thrombotic disorder such as acute ischemic stroke in a patient in need thereof comprising administering a pharmaceutical composition comprising gentisic acid represented below (page 55, claims 21-23): PNG media_image1.png 268 430 media_image1.png Greyscale . Gentisic acid is embraced by formula I where X is O, and each of R1 and R2 are OH. Claim 5 further limits pharmaceutical salts however the claim does not require that the pharmaceutical composition comprises a pharmaceutically acceptable salt of the compound therefore the claim is obvious in view of the prior art method of administering gentisic acid. Claims 6-10 provide limitations for further uses of the pharmaceutical composition including improving/alleviating the inflammatory response caused by cerebral ischemic stroke, reducing the expression level of pro-inflammatory factors, etc. These features are additional advantages which would flow naturally from following the suggestion of the prior art. Ascertainment of the differences between the prior art and the claims. (See MPEP § 2141.02) The prior art method of treatment is embraced by claims 1-10 however, Grennfield et al. do not describe the acute ischemic stroke as cerebral ischemic stroke or disclose an embodiment in which gentisic acid was administered to a patient. Finding of prima facie obviousness --- rationale and motivation (See MPEP § 2142-2143) Sarkar et al. discuss (title) “Cerebral ischemic stroke: cellular fate and therapeutic opportunities" and teach the following about cerebral ischemic strokes (page 436): Cerebral ischemia occurs when there is insufficient blood flow to the brain (18) so that cerebral hypoxia develops through limited oxygen supply which leads to death of the cerebral tissues. This sudden destruction of brain tissue is called as cerebral infarction or ischemic stroke in the brain (19). A person of ordinary skill seeking to practice the prior art method of treating thrombotic disorders such as cerebral ischemic strokes would have been motivated to administer a pharmaceutical composition comprising gentisic acid to improve therapeutic outcomes. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ASHLI A CHICKS whose telephone number is (571)270-0582. The examiner can normally be reached M-Th 7 a.m.- 5 p.m.. 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, James H Alstrum-Acevedo can be reached at (571)272-5548. 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. /A.A.C./Examiner, Art Unit 1626 /MATTHEW P COUGHLIN/Primary Examiner, Art Unit 1626
Read full office action

Prosecution Timeline

Nov 18, 2024
Application Filed
Aug 25, 2026
Non-Final Rejection mailed — §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12735432
PARP INHIBITOR CONTAINING PIPERAZINE STRUCTURE, PREPARATION METHOD THEREFOR AND PHARMACEUTICAL USE THEREOF
3y 0m to grant Granted Sep 15, 2026
Patent 12715877
PROTEIN DEGRADERS AND USES THEREOF
4y 2m to grant Granted Aug 25, 2026
Patent 12679842
HCK AS A THERAPEUTIC TARGET IN MYD88 MUTATED DISEASES
4y 3m to grant Granted Jul 14, 2026
Patent 12662470
HYDROXY AND (HALO)ALKOXY SUBSTITUTED TETRAHYDROFURANS AS MODULATORS OF SODIUM CHANNELS
2y 6m to grant Granted Jun 23, 2026
Patent 12653808
COMPOUNDS FOR TREATING MULTIPLE MYELOMA
5y 0m to grant Granted Jun 16, 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

1-2
Expected OA Rounds
61%
Grant Probability
99%
With Interview (+50.3%)
3y 4m (~1y 5m remaining)
Median Time to Grant
Low
PTA Risk
Based on 94 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