Prosecution Insights
Last updated: April 19, 2026
Application No. 18/293,978

CYANOPYRIDINE AND CYANOPYRIMIDINE BCL6 DEGRADERS

Non-Final OA §112
Filed
Jan 31, 2024
Examiner
VALLE, ERNESTO
Art Unit
1623
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
DANA-FARBER CANCER INSTITUTE, INC.
OA Round
1 (Non-Final)
59%
Grant Probability
Moderate
1-2
OA Rounds
3y 2m
To Grant
97%
With Interview

Examiner Intelligence

Grants 59% of resolved cases
59%
Career Allow Rate
10 granted / 17 resolved
-1.2% vs TC avg
Strong +38% interview lift
Without
With
+37.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
44 currently pending
Career history
61
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
43.6%
+3.6% vs TC avg
§102
17.8%
-22.2% vs TC avg
§112
26.5%
-13.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 17 resolved cases

Office Action

§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 . Priority This application is a national stage application under 35 U.S.C. § 371 of International Application No. PCT/US2022/074387, filed 08/01/2022, which claims the priority benefit of PRO Application No. 63/352,063, filed 06/14/2022 and PRO Application No. 63/228,303 filed 08/02/2021. Information Disclosure Statement The information disclosure statements (IDS) submitted on 01/31/2024, and 06/02/2025 were filed in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statements are being considered by the examiner. Status of the Application Claims 1-2, 6, 11, 16-17, 21-23, 25-28, 30-39, 41-44 and 46-72 are currently pending in this application and under examination. Claims 3-5, 7-10, 18-20, 24, 29, 40, and 45 have been cancelled by applicant without prejudice or disclaimer. Specification The lengthy specification has not been checked to the extent necessary to determine the presence of all possible minor errors. Applicant’s cooperation is requested in correcting any errors of which applicant may become aware in the specification. The use of the term “Keytruda” (pg. 78), which is a trade name or a mark used in commerce, has been noted in this application. The term should be accompanied by the generic terminology; furthermore the term should be capitalized wherever it appears or, where appropriate, include a proper symbol indicating use in commerce such as ™, SM , or ® following the term. Although the use of trade names and marks used in commerce (i.e., trademarks, service marks, certification marks, and collective marks) are permissible in patent applications, the proprietary nature of the marks should be respected and every effort made to prevent their use in any manner which might adversely affect their validity as commercial marks. 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. Claims 68-72 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. The term “characterized” in claim 68, line 1 is a relative term which renders the claim indefinite. The term “characterized” is not defined by the claim, the specification does not provide a standard for ascertaining the requisite degree, and one of ordinary skill in the art would not be reasonably apprised of the scope of the invention. The limitations of instant claim 68 do not provide a person of ordinary skill in the art a suitable definition of what is encompassed by “a disease or disorder characterized by aberrant B-cell lymphoma 6 (BCL6) activity”. This rejection may be overcome by cancelling the claim or amending the language of the claim limitations to remove the term “characterized”. Claims 69-72 are also rejected for being dependent on a rejected claim. Allowable Subject Matter The following is a statement of reasons for the indication of allowable subject matter: The limitations of instant claims 1-2, 6, 11, 16-17, 21-23, 25-28, 30-39, 41-44 and 46-67 make a contribution over Berlin (WO202/1077010) the closest prior art of record. Berlin teaches the compound of formula: PNG media_image1.png 127 234 media_image1.png Greyscale , which can be regarded as the closest prior art and differs from applicants compound of formula I where X2 is independently CH2, S, CHF, CHC1, CHOH, or CF2, and the methyl group adjacent to X2. Berlin also does not fairly teach or suggest to one of ordinary skill the compound of applicant’s formula I of the instant claims. PNG media_image2.png 109 201 media_image2.png Greyscale Applicant’s Formula I (Above) Conclusion Claims 1-2, 6, 11, 16-17, 21-23, 25-28, 30-39, 41-44 and 46-67 are allowable, claims 68-72 are rejected. Correspondence Any inquiry concerning this communication or earlier communications from the examiner should be directed to ERNESTO VALLE JR whose telephone number is (703)756-5356. The examiner can normally be reached 0730-1700 M-F EST, 1st Friday off. 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, Adam C Milligan can be reached at 571-270-7674. 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. /E.V./Examiner, Art Unit 1623 /SAMANTHA L SHTERENGARTS/Primary Examiner, Art Unit 1623
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Prosecution Timeline

Jan 31, 2024
Application Filed
Mar 19, 2026
Non-Final Rejection — §112 (current)

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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
59%
Grant Probability
97%
With Interview (+37.9%)
3y 2m
Median Time to Grant
Low
PTA Risk
Based on 17 resolved cases by this examiner. Grant probability derived from career allow rate.

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