Prosecution Insights
Last updated: August 14, 2026
Application No. 18/709,848

GRANZYME B-TARGETING COMPLEX, RADIOPHARMACEUTICAL, PREPARATION METHOD THEREFOR AND USE THEREOF

Non-Final OA §101§112
Filed
May 14, 2024
Priority
Nov 18, 2021 — CN 202111370138.7 +1 more
Examiner
LIPPERT, JOHN WILLIAM
Art Unit
Tech Center
Assignee
Peking University
OA Round
1 (Non-Final)
57%
Grant Probability
Moderate
1-2
OA Rounds
1y 1m
Est. Remaining
98%
With Interview

Examiner Intelligence

Grants 57% of resolved cases
57%
Career Allowance Rate
90 granted / 159 resolved
-3.4% vs TC avg
Strong +41% interview lift
Without
With
+41.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
54 currently pending
Career history
210
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
61.3%
+21.3% vs TC avg
§102
8.7%
-31.3% vs TC avg
§112
25.0%
-15.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 159 resolved cases

Office Action

§101 §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 . Summary Claims 1-3 and 11-17 are pending in this office action. Claims 4-10 are cancelled. All pending claims are under examination in this application. Priority The current application was filed on May 14, 2024 is a 371 of PCT/CN2022/118207 filed on September 9, 2022. The current application claims foreign priority to CN2021113701238.7 filed on November 18, 2021. Claim Objections Claims 2 and 13-17 are objected to because of the following informalities: Claims 2, 3 and 13-17: Please state all the acronyms in-full. Once defined within the claims all further references to the compound may use the acronym. Claim 3 is included because it does not cure the issue with claim 2. 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. Claims 11-12 and 17 are 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 11 is a generic scheme and is unclear. Please add details to the scheme such as reagents, conditions, and the solid-phase resin being used in the synthesis. Also, please include how the bifunctional chelating agent is coupled within step (b). [This is discussed with pages 4-5 and 8-11 of the instant specification.] Claims 12 and 17 use the term “preferably.” The term "preferably" renders the claim indefinite because it is unclear whether the limitations following the phrase are part of the claimed invention. See MPEP § 2173.05(d). Claim 17 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph. Claim 17 is written as a “use” claim and does not recite process steps. Additionally, claim 17 does not comply with the four statutory categories. It is therefore, indefinite. Claim Rejections - 35 USC § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title. Claim 17 is directed to non-statutory subject matter. The claim 10 does not fall within at least one of the four categories of patent eligible subject matter because it is written as a “use” claim. Prior Art For record purposes only, it is noted that there were no prior art rejections of present claims 1-3 and 11-17 at this time. The Examiner has included a PTO-892 form with relevant prior art. [Bilcer et al. (WO2019/160916A1) is not included, as a file within this office action, due to the size.] Allowable Subject Matter Claims 1-3 and 11-17 contain allowable subject matter over the prior art. Bilcer et al. (WO2019/160916A1) is the closest prior art to the present application. But, the Bilcer et al. reference lacks a complete disclosure of the claimed analogue within instant claim 1. Bilcer et al. disclose granzyme B directed imaging and therapy, and specifically discloses a method of imaging granzyme B in a cell or tissue, which comprises: i) contacting the cell or tissue sample with a compound of formula I, or administering to the subject a compound of formula I: [A-B-C] or a pharmaceutically acceptable salt thereof, and ii) imaging the cell or tissue using a suitable imaging technique, and thereby imaging granzyme B in the cell or tissue, wherein: (A) comprises one or more imaging agents; (B) is an optional linking group; and (C) is a group that binds to granzyme B. Bilcer et al. also disclose a method of imaging an immune response in a cell or tissue sample or in a subject, a method of monitoring the treatment of a disease in a subject, and a method of monitoring an immune response in the treatment of a disease in a subject; wherein (C) is a small organic molecule that binds to granzyme B. PNG media_image1.png 200 400 media_image1.png Greyscale (A) comprises a radioisotope; (B) is an optional linking group comprising one or more C1-30 alkylene groups, one or more amino groups, one or more amide groups, one or more C1-30 alkyleneoxy groups, one or more C1-30 thiol groups, or any combination thereof; and (C) is selected from a polypeptide that binds to granzyme B and a small organic molecule that binds to granzyme B. (A) comprises a radioisotope selected from the group consisting of: 3H, 11C, 64Cu, 67Cu, 67Ga, 68Ga, 89Zr, 90Y, 99mTc, 123I, 124I, 125I, 177Lu, 186Re, 188Re, 201Tl, 203Pb, 210At, 211At, 212Bi, 213Bi and 225Ac. (A) further comprises a chelating agent, and the chelating agent is selected from the group consisting of: 1,4,7-triazacyclononanetriacetic acid (NOTA), 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA), 1,4,7-triazacyclononane-1-glutaric acid-4,7-diacetic acid (NODAGA), ethylene diamine tetra-acetic acid (EDTA), diethylene triaminepentaacetic acid (DTPA), etc. The disease for treatment is cancer (see abstract and claims 1-6, 59, 62, 64, 65, 67, 68 and 101; both within Bilcer et al.). However, this representative derivative disclosed by Bilcer et al. is only a portion of the claimed compound within the instant application. Motivation is lacking to complete the analogue because there are specific organic linkers between the disclosed molecule and the bifunctional chelating group. Conclusion Claim 1 is allowed. Please address all non-prior art rejections and objections. Any inquiry concerning this communication or earlier communications from the examiner should be directed to JOHN W LIPPERT III whose telephone number is (571)270-0862. The examiner can normally be reached Monday - Thursday 9:00 AM - 5:00 PM. 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 A Wax can be reached on 571-272-0623. 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. /JOHN W LIPPERT III/Examiner, Art Unit 1615 /Robert A Wax/Supervisory Patent Examiner, Art Unit 1615
Read full office action

Prosecution Timeline

May 14, 2024
Application Filed
Jul 28, 2026
Non-Final Rejection mailed — §101, §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
57%
Grant Probability
98%
With Interview (+41.3%)
3y 4m (~1y 1m remaining)
Median Time to Grant
Low
PTA Risk
Based on 159 resolved cases by this examiner. Grant probability derived from career allowance rate.

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