Prosecution Insights
Last updated: July 17, 2026
Application No. 17/608,921

PARA-AMINOHIPPURIC ACID (PAH) AS A RENAL PROTECTIVE SUBSTANCE

Non-Final OA §112
Filed
Nov 04, 2021
Priority
May 08, 2019 — EU PCT/EP2019/061882 +1 more
Examiner
JONES, DAMERON LEVEST
Art Unit
1618
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Itm Isotope Technologies Munich SE
OA Round
3 (Non-Final)
68%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 68% — above average
68%
Career Allowance Rate
730 granted / 1079 resolved
+7.7% vs TC avg
Strong +31% interview lift
Without
With
+31.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
40 currently pending
Career history
1122
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
41.7%
+1.7% vs TC avg
§102
8.0%
-32.0% vs TC avg
§112
37.7%
-2.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1079 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 . Acknowledgments and Claim Status The Examiner acknowledges receipt of the amendment filed 5/20/2026 wherein claims 1-30, 32, 33, and 42 were canceled. Note(s): Claims 31, 34-41, and 43-45 are pending. A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 5/20/2026 has been entered. Priority and Priority Document This application is a 371 of PCT/EP2020/062950 filed 5/8/2020 and claims priority to PCT/EP2019/061882 filed 5/8/2019. Note(s): The earliest effective filing date is 5/8/2019 as the parent applications fully support the claimed invention. Once again, receipt of the certified priority document filed 11/4/2021 is acknowledged as required by 37 CFR 1.55. Response to Applicant’s Amendment and/or Arguments Applicant's amendment filed 3/9/2026 regarding withdrawn claims 15-28 is duly noted. Clarification of the Record While no prior art is cited against the pending claims, clarification of the claimed invention is necessary as the pending invention (see independent claim 31) is somewhat vague. The Examiner is respectfully requesting that Applicant consider amending the claim to clarify what is actually being claim. A suggestion of how one may clarify the invention is found below as a starting point to assist Applicant. NEW GROUNDS OF REJECTION 112 Second Paragraph Rejections 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 31, 34-41, and 43-45 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. Claims 31, 34-41, and 43-45: Independent claim 31 is ambiguous because the manner in which the claim is written does not clearly set forth the claimed method. Since claims 34-41, and 43-45 depend upon independent claim 31 for clarity, those claims are also indefinite. Below is a suggestion of how one may consider clarifying the pending invention. Suggestion: A method of reducing nephrotoxicity of a radiopharmaceutical in a subject comprising: administering a pharmaceutical composition comprising para-amino hippuric acid (PAH) or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable excipient, diluent, carrier, or a combination thereof, to the subject prior to, during, or after imaging or therapy; wherein the radiopharmaceutical in said subject is a radionuclide-containing conjugate molecule comprising a carrier molecule, a chelator, and a radionuclide. Information Disclosure Statement The information disclosure statement filed 5/20/2026 was considered. Allowable Claims Claims 31, 34-41, and 43-45 are allowable over the prior art of record. In particular, the prior art neither anticipates nor renders obvious a method of nephrotoxicity reduction wherein a subject is administered a pharmaceutical composition comprising para-amino hippuric acid (PAH) or a pharmaceutically acceptable salt as set forth in independent claim 31. Conclusion Claims 31, 34-41, and 43-45 are rejected. Future Correspondences Any inquiry concerning this communication or earlier communications from the examiner should be directed to D L Jones whose telephone number is (571)272-0617. The examiner can normally be reached 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, Michael G. Hartley can be reached at (571)272-0616. 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. L. Jones/ Primary Patent Examiner Art Unit 1618 June 27, 2026
Read full office action

Prosecution Timeline

Show 1 earlier event
May 21, 2025
Non-Final Rejection mailed — §112
Aug 21, 2025
Response Filed
Dec 10, 2025
Final Rejection mailed — §112
Mar 09, 2026
Request for Continued Examination
Mar 16, 2026
Response after Non-Final Action
May 20, 2026
Request for Continued Examination
May 26, 2026
Response after Non-Final Action
Jul 01, 2026
Non-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
68%
Grant Probability
99%
With Interview (+31.4%)
3y 5m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 1079 resolved cases by this examiner. Grant probability derived from career allowance rate.

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