Prosecution Insights
Last updated: April 19, 2026
Application No. 18/549,127

COVALENT EGFR INHIBITORS AND METHODS OF USE THEREOF

Non-Final OA §102§DP
Filed
Sep 05, 2023
Examiner
SEITZ, ANTHONY JOSEPH
Art Unit
1629
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
DANA-FARBER CANCER INSTITUTE, INC.
OA Round
1 (Non-Final)
68%
Grant Probability
Favorable
1-2
OA Rounds
3y 8m
To Grant
96%
With Interview

Examiner Intelligence

Grants 68% — above average
68%
Career Allow Rate
108 granted / 158 resolved
+8.4% vs TC avg
Strong +28% interview lift
Without
With
+27.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 8m
Avg Prosecution
74 currently pending
Career history
232
Total Applications
across all art units

Statute-Specific Performance

§101
3.5%
-36.5% vs TC avg
§103
25.8%
-14.2% vs TC avg
§102
18.7%
-21.3% vs TC avg
§112
23.2%
-16.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 158 resolved cases

Office Action

§102 §DP
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 . DETAILED ACTION Status of the Claims Applicant’s election of Compound 001, PNG media_image1.png 209 314 media_image1.png Greyscale , as the single specific compound in the response filed on December 26th 2025 is acknowledged. Applicant’s elected species is not found in the art. As recognized by MEPEP § 803.02(III)(C)(2): If the elected species or group of patentably indistinct species is not anticipated by or obvious over the prior art, the examiner should extend the search and examination to a non-elected species or group of species that falls within the scope of a proper Markush grouping that includes the elected species. The search and examination should be continued until either (1) prior art is found that anticipates or renders obvious a species that falls within the scope of a proper Markush grouping that includes the elected species, or (2) it is determined that no prior art rejection of any species that falls within the scope of a proper Markush grouping that includes the elected species can be made. The examiner need not extend the search beyond a proper Markush grouping. In other words, the examiner need not extend the search to any additional species that do not share a single structural similarity and a common use with the elected species (i.e., do not belong to the same recognized physical or chemical class or to the same art- recognized class and/or do not have a common use and/or do not share a substantial structural feature of a chemical compound and a use that flows from the substantial structural feature). The examiner should continue examination of the Markush claim to determine whether it meets all other requirements of patentability (e.g., 35 U.S.C. 101 and 112, nonstatutory double patenting, and proper Markush grouping). Claims 1-5, 8-9, 12-16, and 19-26 are pending. Claims 19-21 are withdrawn from further consideration as being directed towards nonelected species until a generic claim has been found allowable. Claims 1-5, 8-9, 12-16, and 22-26 are examined on their merits. Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement The Information Disclosure Statement filed on September 21st 2023 is in compliance with the provisions of 37 CFR 1.97 and has been considered in full. A signed copy of references cited from the IDS is included with this Office Action. 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. 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)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1-2, 4-5, 8-9, 12-14, and 22-26 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Engelhardt (US 2022/0380382 A1 effectively filed on June 24th 2019). The claims are directed to a compound of Formula I: PNG media_image2.png 172 287 media_image2.png Greyscale . Engelhardt teaches compound I-037: PNG media_image3.png 153 233 media_image3.png Greyscale (Engelhardt, pg. 93, compound I-037). Compound I-037 is equivalent to applicant’s compound wherein X is O A is pyridinyl B is pyrazole R1 is H R2 is F R5 is CH3 All other R groups are H Engelhardt’s compound I-037 thereby anticipates claims 1-2, 4-5, 8-9, and 12-14. Claim 22 is directed towards a pharmaceutical composition comprising a compound of claim 1 and a pharmaceutically acceptable carrier. Engelhardt teaches such a composition (Engelhardt, pg. 103, claim 26), anticipating claim 22. Claim 23 is directed towards a method of inhibiting EGFR activity in a subject via administration of a compound of claim 1. Engelhardt’s compounds are taught as EGFR inhibitors (Engelhardt, Abstract), anticipating claim 23. Claims 24-26 are directed towards a method for treating lung cancer via administration of a compound of claim 1. Engelhardt teaches the treatment of non-small cell lung cancer (Engelhardt, pg. 12, paragraph [0150]), anticipating claims 24-26. Allowable Subject Matter Claims 3, 15, and 16 are free of the prior art. Applicant has developed EGFR inhibitors of Formula I: . PNG media_image2.png 172 287 media_image2.png Greyscale . Compounds of this general structure have been found in the prior art (see Engelhardt, US 2022/0380382 A1, above) and similarly have been demonstrated to inhibit the epidermal growth factor receptor (EGFR). Unique to applicant’s structure are the attachments to the A ring, as described in claims 3, 15, and 16: PNG media_image4.png 158 395 media_image4.png Greyscale PNG media_image5.png 329 655 media_image5.png Greyscale PNG media_image6.png 372 645 media_image6.png Greyscale As one of ordinary skill in the art would see no reason to add this particular functional groups in the R2 location, attached to the A ring, claims 3, 15, and 16 are free of the prior art. Claims 3, 15, and 16 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 the base claim and any intervening claims. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Anthony Seitz whose telephone number is (703)756-4657. The examiner can normally be reached 7:30 AM ET - 5:00 PM ET M-F. 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, Jeffrey Lundgren can be reached at (571)272-5541. 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.J.S./Examiner, Art Unit 1629 /JEFFREY S LUNDGREN/Supervisory Patent Examiner, Art Unit 1629
Read full office action

Prosecution Timeline

Sep 05, 2023
Application Filed
Jul 01, 2024
Response after Non-Final Action
Jan 28, 2026
Non-Final Rejection — §102, §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12599583
SMALL MOLECULE GRB2 STABILIZERS FOR RAS MAP KINASE INHIBITION
2y 5m to grant Granted Apr 14, 2026
Patent 12595263
PYRAZOLOPYRIMIDINE COMPOUND USED AS ATR KINASE INHIBITOR
2y 5m to grant Granted Apr 07, 2026
Patent 12590087
INHIBITING USP36
2y 5m to grant Granted Mar 31, 2026
Patent 12590080
NOVEL COMPOUNDS
2y 5m to grant Granted Mar 31, 2026
Patent 12583861
DERIVATIVES OF IMIDAZO[4,5-d]PYRIDAZINE, THEIR PREPARATION AND THEIR THERAPEUTIC APPLICATION
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
68%
Grant Probability
96%
With Interview (+27.5%)
3y 8m
Median Time to Grant
Low
PTA Risk
Based on 158 resolved cases by this examiner. Grant probability derived from career allow rate.

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