Prosecution Insights
Last updated: July 17, 2026
Application No. 18/724,365

PROTEASE INHIBITORS FOR TREATING OR PREVENTING CORONAVIRUS INFECTION

Non-Final OA §112
Filed
Jun 26, 2024
Priority
Jan 07, 2022 — provisional 63/297,391 +2 more
Examiner
KUCHARCZK, JED A
Art Unit
Tech Center
Assignee
Merck Sharp & Dohme LLC
OA Round
1 (Non-Final)
80%
Grant Probability
Favorable
1-2
OA Rounds
8m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allowance Rate
74 granted / 93 resolved
+19.6% vs TC avg
Strong +17% interview lift
Without
With
+16.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
36 currently pending
Career history
126
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
44.1%
+4.1% vs TC avg
§102
19.4%
-20.6% vs TC avg
§112
9.5%
-30.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 93 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 . Information Disclosure Statement The information disclosure statements (IDSes) submitted on 08/20/2024 and 12/11/2025 were filed in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statements are being considered by the examiner. Claim Objections Claim 1 is objected to because of the following informalities: Claim 1 recites PNG media_image1.png 110 320 media_image1.png Greyscale which is missing a space at PNG media_image2.png 21 57 media_image2.png Greyscale . 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 12 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 12 recites “wherein the compound is selected from any one of Examples 1-123”. Where possible, claims are to be complete in themselves. Incorporation by reference to a specific figure or table "is permitted only in exceptional circumstances where there is no practical way to define the invention in words and where it is more concise to incorporate by reference than duplicating a drawing or table into the claim. Incorporation by reference is a necessity doctrine, not for applicant’s convenience." Ex parte Fressola, 27 USPQ2d 1608, 1609 (Bd. Pat. App. & Inter. 1993). See MPEP 2173.05(s). There is no exceptional circumstance to permit the reference to Examples 1-123 in the specification which includes references to tables. Furthermore, some examples such as Example 1 refer not only to compounds but also their syntheses which renders the reference to the specification unclear. To overcome this rejection, it is suggested applicant recite the structures and/or names of the compounds of Examples 1-123 in the body of the claim. Allowable Subject Matter The closest prior art is WO 2023/043816 A1, effectively filed 17 September 2021, which teaches antiviral compounds of Formula (I) PNG media_image3.png 132 214 media_image3.png Greyscale such as PNG media_image4.png 111 211 media_image4.png Greyscale at Para. [0113] which have the same scaffold as the instantly claimed compounds of Formula 1. The compounds differ from those instantly claimed in the substituents present at the following positions of instant Formula I: PNG media_image5.png 136 263 media_image5.png Greyscale . The variable R5 in the prior art is drawn to cyclic structures (Para. [0093]) and the instantly claimed substituted amide group in said position is neither taught nor suggested. Furthermore, the difluoroalkyl group required by the instant claims is neither taught nor suggested by the prior art as the examples are drawn to alkyl-heterocyclyl moieties in the corresponding position and there is no suggestion to substitute the claimed difluoroalkyl for any of R1, R2 and R3 of the prior art compound(s). Accordingly, to arrive at the instantly claimed compounds would require multiple substitutions to the prior art compounds which are suggested neither individually or as a whole by the prior art. Accordingly, claims 1-19 are both novel and nonobvious over the prior art. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JED A KUCHARCZK whose telephone number is (571)270-5206. The examiner can normally be reached Mon-Fri 7:30 to 5. 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 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. /JED A KUCHARCZK/Examiner, Art Unit 1623 /VALERIE RODRIGUEZ-GARCIA/Primary Examiner, Art Unit 1621
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Prosecution Timeline

Jun 26, 2024
Application Filed
Jun 11, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

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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
80%
Grant Probability
96%
With Interview (+16.9%)
2y 9m (~8m remaining)
Median Time to Grant
Low
PTA Risk
Based on 93 resolved cases by this examiner. Grant probability derived from career allowance rate.

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