Prosecution Insights
Last updated: May 29, 2026
Application No. 18/001,832

TREATMENT OF VIRAL INFECTIONS WITH ESTROGEN RECEPTOR MODULATORS AND ANTI-INFLAMMATORY AGENTS

Final Rejection §103
Filed
Dec 14, 2022
Priority
Jun 18, 2020 — provisional 63/040,620 +1 more
Examiner
HAVLIN, ROBERT H
Art Unit
1626
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
The Cleveland Clinic Foundation
OA Round
2 (Final)
52%
Grant Probability
Moderate
3-4
OA Rounds
0m
Est. Remaining
80%
With Interview

Examiner Intelligence

Grants 52% of resolved cases
52%
Career Allowance Rate
534 granted / 1022 resolved
-7.7% vs TC avg
Strong +27% interview lift
Without
With
+27.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
95 currently pending
Career history
1129
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
36.8%
-3.2% vs TC avg
§102
14.2%
-25.8% vs TC avg
§112
32.7%
-7.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1022 resolved cases

Office Action

§103
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 . Priority This application is a 371 of PCT/US2021/037999 (06/18/2021) PCT/US2021/037999 has PRO 63/040,620 (06/18/2020). Status Claims 1-9, 17-24 are pending. Rejections not reiterated in this office action are withdrawn. New Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claims 1-9, 17-24 are rejected under 35 U.S.C. 103 as being unpatentable over Reiter et al. (Front. Med. 7:226, 15 May 2020, 7 pages) in view of Breithaupt-Faloppa et al. (“17β-Estradiol, a potential ally to alleviate SARS-CoV-2 infection.” Clinics (Sao Paulo). 2020:75:e1980. doi: 10.6061/clinics/2020/e1980. Epub 2020 May 29. 8 pages). Reiter teaches administration of melatonin to COVID-19 patients at 100 mg/day (abstract, page 5, Fig. 2: twice daily) and suggests combinations with other drugs (p. 5: “melatonin should be given consideration for prophylactic use or treatment alone or in combination with other drugs”). Reiter does not teach a combination with toremifene. Breithaupt-Faloppa teaches that toremifene has antiviral activity in SARS-CoV-2 models as shown in MERS-CoV, SARS-CoV, and Ebola infections (p. 5: the “compounds play a major role in antiviral therapies for SARS-CoV-2”). “It is prima facie obvious to combine two compositions each of which is taught by the prior art to be useful for the same purpose, in order to form a third composition to be used for the very same purpose .... [T]he idea of combining them flows logically from their having been individually taught in the prior art.” In re Kerkhoven, 205 USPQ 1069, 1072 (CCPA 1980) (citations omitted) (Claims to a process of preparing a spray-dried detergent by mixing together two conventional spray-dried detergents were held to be prima facie obvious.). See also In re Crockett, 126 USPQ 186 (CCPA 1960) (the “joint use [of magnesium oxide and calcium carbide] is not patentable” where the prior art teaches “that both magnesium oxide and calcium carbide, individually, promote the formation of a nodular structure in cast iron, and it would be natural to suppose that, in combination, they would produce the same effect and would supplement each other”); and Ex parte Quadranti, 25 USPQ2d 1071 (Bd. Pat. App. & Inter. 1992) (mixture of two known herbicides held prima facie obvious). See also Merck & Co., Inc. v. Biocraft Labs, Inc., 874 F.2d 804, 808 (Fed. Cir. 1989) (“Given the prior art teaching that both amiloride and hydrochlorothiazide are natriuretic, it is to be expected that their coadministration would induce more sodium excretion than would either diuretic alone”); In re Diamond, 360 F.2d 214, 217 (CCPA 1966) (where the evidence showed that synergy was expected because combined drugs targeted different cellular mechanisms, and no evidence to the contrary was produced, “[w]e are not convinced of [the] non-obviousness of the combination of two drugs, A5MP and a glucocorticoid . . . particularly since Appeal the record supports the [PTO’s] contention that the drugs selected are two of the commonly used drugs in the treatment of such collagen diseases”). In this case, Reiter teaches melatonin is useful for treating COVID-19 in combination with other therapeutics while Breithaupt-Faloppa teaches toremifene is useful for treating COVID-19. Therefore, the combination of the two compounds for the very same purpose is prima facie obvious. “[T]he idea of combining them flows logically from their having been individually taught in the prior art.” In re Kerkhoven, 205 USPQ 1069, 1072 (CCPA 1980). One of ordinary skill in the art would consider routine and well within their technical grasp the process of combining the therapies as suggested by the prior art and arrive at the claimed invention with a reasonable expectation of success. One of ordinary skill in the art would have also considered optimization of the doses and schedule through routine experimentation as these are well-known results-effective variables in the art and would lead to the claimed ranges with a reasonable expectation of success. Conclusion No claims allowed. 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 ROBERT H HAVLIN whose telephone number is (571)272-9066. The examiner can normally be reached 9am - 6pm. 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, Kortney Klinkel can be reached at (571) 270-5293. 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. /ROBERT H HAVLIN/Primary Patent Examiner, Art Unit 1626
Read full office action

Prosecution Timeline

Dec 14, 2022
Application Filed
Aug 20, 2025
Non-Final Rejection mailed — §103
Nov 20, 2025
Response Filed
Nov 20, 2025
Response after Non-Final Action
Jan 13, 2026
Final Rejection mailed — §103 (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
52%
Grant Probability
80%
With Interview (+27.2%)
2y 9m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1022 resolved cases by this examiner. Grant probability derived from career allowance rate.

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