Prosecution Insights
Last updated: July 17, 2026
Application No. 17/920,663

Compounds and Compositions for Treating Hematologic Malignancies

Final Rejection §112
Filed
Oct 21, 2022
Priority
Apr 27, 2020 — provisional 63/016,054 +2 more
Examiner
BURKETT, DANIEL JOHN
Art Unit
1600
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
BARUCH S. BLUMBERG INSTITUTE
OA Round
2 (Final)
64%
Grant Probability
Moderate
3-4
OA Rounds
0m
Est. Remaining
92%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allowance Rate
58 granted / 90 resolved
+4.4% vs TC avg
Strong +28% interview lift
Without
With
+28.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
48 currently pending
Career history
132
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
25.8%
-14.2% vs TC avg
§102
21.5%
-18.5% vs TC avg
§112
28.8%
-11.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 90 resolved cases

Office Action

§112
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 . Status of Claims Claims 1, 3-4, and 6-19 are pending in the instant application. Claims 2 and 5 have been canceled. Claims 13-18 stand withdrawn. Withdrawn Objections/Rejections Applicant’s amendment is sufficient to overcome the rejection of Claim 10 under 35 U.S.C. 112(b). This rejection is hereby withdrawn. Applicant’s amendment is sufficient to overcome the rejection of Claims 1, 2, 4, 5, 8, and 12 under 35 U.S.C. 102(a)(1). Claims 2 and 5 have been canceled, rendering the rejection thereof moot. These rejections are hereby withdrawn. Applicant has traversed the rejection of Claims 2, 5, 8, and 10 under 35 U.S.C. 103 as being unpatentable over Allen et. al. (“In vitro antimalarial and cytotoxic activities of semisynthetic derivatives of brusatol”, Eur J Med Chem, 1993; cited in non-final office action mailed August 1st, 2025; cited on Applicant’s Information Disclosure Statement filed April 18th, 2023; hereinafter referred to as Allen). Applicant’s cancellation of Claims 2 and 5 renders the rejection thereof moot. The closest compound taught by Allen is compound 2b, taught at page 266. For clarity, the full structure of this compound is: PNG media_image1.png 434 619 media_image1.png Greyscale This compound reads on a compound of formula (I) as recited at Claim 1 when the variables are defined as follows: R1 is PNG media_image2.png 66 63 media_image2.png Greyscale . R is NHBox. R’ is C8 alkyl. Notably, the present amendment requires that when R’ is C1-C7 alkyl, that it is substituted C1-C7 alkyl. Therefore, due to the lack of substitution in the alkyl chain in the compound taught by Allen, this rejection is overcome by the amendment. The rejection of Claims 2, 5, 8, and 10 under 35 U.S.C. 103 is hereby withdrawn. The following Objections and Rejections are Necessitated by Amendment: Claim Objections Claim 19 is objected to because of the following informalities: Rule 1.141(a) states: Two or more independent and distinct inventions may not be claimed in one national application, except that more than one species of an invention, not to exceed a reasonable number, may be specifically claimed in different claims in one national application, provided the application also includes an allowable claim generic to all the claimed species and all the claims to species in excess of one are written in dependent form (§ 1.75) or otherwise include all the limitations of the generic claim. Claim 19 claims a large number of species of the generic claim, but in independent format. Multiple inventions may not be claimed in a single application unless they are species claims which are dependent upon the larger, generic claim. In the past, the Office has held a “reasonable number” to be five (5) species. The present claim contains well over this number of species. One could envision forty pages of species compounds in a single claim which is not dependent upon any genus claim. This would cause undue burden to the Office in examining such a large claim. Therefore, it is recommended that Claim 19 either be dependent from a larger, genus claim, or, that claim 19 incorporate all of the limitations of the genus claim. Applicants are invited to contact the examiner if further clarification is needed. No new matter is permitted. Appropriate correction is required. 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 3 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 3 recites the limitation "The composition of claim 1, wherein the compound is selected from the group consisting of: … PNG media_image3.png 134 268 media_image3.png Greyscale " in the second line at Page 5 of the instant claims. There is insufficient antecedent basis for this limitation in the claim. This compound reads on a compound of formula (I) when R1 is PNG media_image4.png 65 61 media_image4.png Greyscale . R is then defined as NH2. This compound would then require R’ to be defined as methyl, for which the claim lacks antecedent basis, as R' can be substituted C1-C7 alkyl, but not unsubstituted C1-C7 alkyl, as required by this compound. Allowable Subject Matter Claim 3 is rejected. Claim 19 is objected to. Claims 1, 4, 6-12 are allowed. Claims 13-18 stand withdrawn. Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). 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 DANIEL JOHN BURKETT whose telephone number is (703)756-5390. The examiner can normally be reached Monday - Friday. 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 Murray can be reached at (571) 272-9023. 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. /D.J.B./ Examiner, Art Unit 1624 /JEFFREY H MURRAY/ Supervisory Patent Examiner, Art Unit 1624
Read full office action

Prosecution Timeline

Oct 21, 2022
Application Filed
Aug 01, 2025
Non-Final Rejection mailed — §112
Oct 10, 2025
Response Filed
Jun 22, 2026
Final Rejection mailed — §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

3-4
Expected OA Rounds
64%
Grant Probability
92%
With Interview (+28.0%)
3y 4m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 90 resolved cases by this examiner. Grant probability derived from career allowance rate.

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