Prosecution Insights
Last updated: September 17, 2026
Application No. 18/717,846

COMBINATION OF 5-AMINO-2,3-DIHYDRO-1,4-PHTALAZINEDIONE AND A 6'-METHOXYCINCHONAN-9-OL FOR USE IN THE TREATMENT OF CORONAVIRAL INFECTIONS

Non-Final OA §112
Filed
Jun 07, 2024
Priority
Dec 08, 2021 — EU 21000346.3 +1 more
Examiner
VAJDA, KRISTIN ANN
Art Unit
Tech Center
Assignee
Metropharm AG
OA Round
1 (Non-Final)
84%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allowance Rate
1361 granted / 1621 resolved
+24.0% vs TC avg
Moderate +11% lift
Without
With
+10.9%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 9m
Avg Prosecution
39 currently pending
Career history
1651
Total Applications
across all art units

Statute-Specific Performance

§101
4.1%
-35.9% vs TC avg
§103
12.4%
-27.6% vs TC avg
§102
26.6%
-13.4% vs TC avg
§112
34.0%
-6.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1621 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 . Claims 1-16 are pending in the instant application. Claims 1-8, 12 and 16 are rejected. Claims 9-11 and 13-15 are allowed. Information Disclosure Statement The information disclosure statement filed on June 30, 2025 has been considered and a signed copy of form 1449 is enclosed herewith. 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 1-8, 12 and 16 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. With regards to claims 1-8 and 16, the claims are drawn to a “pharmaceutical combination” of 5-amino-2,3-dihyro-1,4-phthalazinedione or one of its pharmaceutically acceptable salts, hydrates or solvates and a 6’-methoxycinchonan-9-ol or a pharmaceutically acceptable salt thereof and the phrase “pharmaceutical combination” renders the claims indefinite. Since the phrase is not defined in the specification, it is unclear what can and cannot be included in the combination (i.e., it is unclear whether a carrier or pharmaceutically acceptable expedient is included in the combination or if the two compounds are present in a package for delivery). Appropriate correction is required. Claim 12 recites the limitation "wherein said substance, composition or combination" and claim 9, from which the claim depends, does not disclose a substance or the word “combination”. Therefore, there is insufficient antecedent basis for this limitation in the claim. This rejection can be overcome by amending the phrase to read “wherein said composition”. Allowable Subject Matter Claims 9-11 and 13-15 are allowed. No prior art was found. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KRISTIN ANN VAJDA whose telephone number is (571)270-5232. The examiner can normally be reached Mon-Fri 6:00-4:00. 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, James Alstrum-Acevedo can be reached at 571-272-5548. 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. /KRISTIN A VAJDA/Primary Examiner, Art Unit 1622
Read full office action

Prosecution Timeline

Jun 07, 2024
Application Filed
Aug 18, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12735391
POLYMORPHS OF PONESIMOD
2y 8m to grant Granted Sep 15, 2026
Patent 12734388
COMPOSITIONS AND USES OF TRANS-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE AND 1,1-DIFLUOROETHANE (R-152A)
2y 4m to grant Granted Sep 15, 2026
Patent 12729191
PRODUCTION METHOD FOR SYNTHETIC INTERMEDIATE OF MONOCYCLIC PYRIDINE DERIVATIVE
2y 7m to grant Granted Sep 08, 2026
Patent 12729190
CORONAVIRUS MAIN PROTEASE INHIBITORS AND METHODS USING SAME
2y 7m to grant Granted Sep 08, 2026
Patent 12721834
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2y 7m to grant Granted Sep 01, 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
84%
Grant Probability
95%
With Interview (+10.9%)
1y 9m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1621 resolved cases by this examiner. Grant probability derived from career allowance rate.

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