Prosecution Insights
Last updated: August 15, 2026
Application No. 18/292,890

BICYCLIC PGDH INHIBITORS AND METHODS OF MAKING AND USING

Non-Final OA §102§112§DP
Filed
Jan 26, 2024
Priority
Jul 28, 2021 — provisional 63/226,273 +2 more
Examiner
CHENG, KAREN
Art Unit
1623
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Epirium Bio Inc.
OA Round
1 (Non-Final)
76%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allowance Rate
524 granted / 687 resolved
+16.3% vs TC avg
Strong +27% interview lift
Without
With
+27.1%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 1m
Avg Prosecution
53 currently pending
Career history
728
Total Applications
across all art units

Statute-Specific Performance

§101
2.6%
-37.4% vs TC avg
§103
27.6%
-12.4% vs TC avg
§102
20.3%
-19.7% vs TC avg
§112
32.2%
-7.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 687 resolved cases

Office Action

§102 §112 §DP
DETAILED ACTION Claims 1, 4-6, 11, 13-15, 27, 32, 35, 38, 42-43, 46-47, 49-50, 56 and 82 are currently pending in the instant application. 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 . Election/Restrictions Applicant’s election without traverse of election of species PNG media_image1.png 132 172 media_image1.png Greyscale in the reply filed on 07/09/2026 is acknowledged. Claims 14, 46 and 49-50 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 07/09/2026. In accordance with the MPEP, if upon examination of the elected species, no prior art is found that would anticipate or render obvious the instant invention based on the elected species and the claims drawn to the elected species are allowable, the search of the Markush-type claim will be extended (see MPEP 803.02). If prior art is then found that anticipates or renders obvious the non-elected species, the Markush-type claim will be rejected. It should be noted that the prior art search will not be extended unnecessarily to cover all non-elected species. Should Applicant overcome the rejection by amending the claim, the amended claim will be reexamined. Id. The prior art search will be extended to the extent necessary to determine patentability of the Markush-type claim. Id. In the event prior art is found during reexamination that renders obvious or anticipates the amended Markush-type claim, the claim will be rejected and the action made final. Id. Applicants' elected species of PNG media_image1.png 132 172 media_image1.png Greyscale does not appear allowable, therefore the search and examination of the claims has not been extended beyond the elected species (see the following 35 USC 102(a)(2) rejection). However during the search of the species, the Examiner has identified additional prior art PNG media_image2.png 168 446 media_image2.png Greyscale , which is a non-elected species that anticipates the Markush-type claims. Thus, the Markush-type claims are rejected as follows and the subject matter of the claims drawn to nonelected species held withdrawn from consideration. Claims 1, 4-6, 11, 13, 15, 27, 32, 35, 38, 42-43, 47, 56 and 82 have been examined to the extent that they are readable on the elected embodiment and the above identified nonelected species. Since art was found on the nonelected species, subject matter not embraced by the elected embodiment or the above identified nonelected species is therefore withdrawn from further consideration. It is noted that although the elected species does not read on claim 14 as Applicant states in the response filed 07/09/2026. Thus, claims 14, 46 and 49-50 do not read on the elected embodiment and are therefore considered withdrawn claims. Since the elected embodiment is not allowable, subject matter not embraced by the elected embodiment is therefore withdrawn from further consideration. It has been determined the entire scope claimed is not patentable. Priority PNG media_image3.png 62 366 media_image3.png Greyscale Information Disclosure Statement Applicant's Information Disclosure Statements filed on 09/11/2024, 06/16/2025 and 07/09/2026 have been considered. Please refer to Applicant's copies of the 1449 submitted herewith. Claim Objections Claim 4 is objected to because of the following informalities: it states that X3 is N or CR3B. However there is no X3 found in the compound of formula (VI). Appropriate correction is required. Claim 15 is objected to under 37 CFR 1.75 as being a substantial duplicate of claim 13. When two claims in an application are duplicates or else are so close in content that they both cover the same thing, despite a slight difference in wording, it is proper after allowing one claim to object to the other as being a substantial duplicate of the allowed claim. See MPEP § 608.01(m). 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 82 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 82 refers to compounds represented by entries of Table 1a. Claims must, under modern claim practice, stand alone to define an invention, and incorporation into claims by express reference to the specification is not permitted. See Ex parte Fressola, 27 USPQ 2d 1608 (1993). Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1, 4-6, 11, 13-15, 27, 32, 35, 38, 42-43, 47, 56 and 82 is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by RAI et al (see WIPO Pub No. WO 2021/151014, pub. 07/29/2021 and filed 01/22/2021, cited in IDS filed 09/11/2024). RAI et al teach compound PNG media_image4.png 116 152 media_image4.png Greyscale (see p. 28) in a composition (see paragraph [0030], p. 19). This compound corresponds to the elected species. The applied reference has a common inventor with the instant application. Based upon the earlier effectively filed date of the reference, it constitutes prior art under 35 U.S.C. 102(a)(2). This rejection under 35 U.S.C. 102(a)(2) might be overcome by: (1) a showing under 37 CFR 1.130(a) that the subject matter disclosed in the reference was obtained directly or indirectly from the inventor or a joint inventor of this application and is thus not prior art in accordance with 35 U.S.C. 102(b)(2)(A); (2) a showing under 37 CFR 1.130(b) of a prior public disclosure under 35 U.S.C. 102(b)(2)(B) if the same invention is not being claimed; or (3) a statement pursuant to 35 U.S.C. 102(b)(2)(C) establishing that, not later than the effective filing date of the claimed invention, the subject matter disclosed in the reference and the claimed invention were either owned by the same person or subject to an obligation of assignment to the same person or subject to a joint research agreement. Claim(s) 1, 4-6, 11, 13-15, 27, 32, 35, 38, 42-43, 47 and 56 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by CA Reg No. 2649936-83-2, entered into STN on 07/07/2021. CA Reg No. 2649936-83-2 corresponds to compound PNG media_image2.png 168 446 media_image2.png Greyscale which is compound of formula (V) wherein n and m are 1, W is CR6R6 wherein R6 is H, A3 is CR7 wherein R7 is H, A1 is CR1, R1 is H, A2 is N, ring Q is C6 aryl, p is 1, R3 is C(O)OR10 wherein R10 is C1-C6 alkyl as well as a compound of formula (VI) wherein X2 is CR3A, X4 is CR3C, and X5 is CH, wherein R3A and R3C are H, R3B is C(O)OR10 wherein R10 is C1-C6 alkyl. Further the compound corresponds to a compound of formula (I) wherein A1 is CR1, R1 is H, A2 is N, A3 is CR7, R7 is H, L is C(O), R4 is PNG media_image5.png 92 86 media_image5.png Greyscale wherein n and m are 1, R6 is H, W is CR6R6 wherein R6 is H, ring Q is C6 aryl and R3 is C(O)OR10 wherein R10 is C1-C6 alkyl. Regarding the composition of claim 56, comprising the anticipatory compound and an excipient, the Registry entry for Registry no. 2649936-83-2 discloses a mass solubility of 0 g/L, in unbuffered water at pH 7.017. This teaching of water anticipates the claimed composition, wherein the compounds are present with an excipient (i.e., water). See MPEP 2128: ELECTRONIC PUBLICATIONS AS PRIOR ART Status as a "Printed Publication" An electronic publication, including an on-line database or Internet publication, is considered to be a “printed publication” within the meaning of 35 U.S.C. 102(a) and (b) provided the publication was accessible to persons concerned with the art to which the document relates. See In re Wyer, 655 F.2d 221, 227, 210 USPQ 790, 795 (CCPA 1981) Since this date represents the date that each compound entered the CAPlus database on STN, this represents the date that each compound was made accessible to the public. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 1, 4-6, 11, 13-15, 27, 32, 35, 38, 42-43, 47, 56 and 82 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-16 of U.S. Patent No. 12,559,493, hereafter referred to as ‘493. Although the claims at issue are not identical, they are not patentably distinct from each other because ‘493 is drawn to compounds, pharmaceutical compositions and methods of using said compounds of formula PNG media_image6.png 202 174 media_image6.png Greyscale with the compound PNG media_image7.png 230 294 media_image7.png Greyscale which corresponds to the elected species (see claim 14) taught. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KAREN CHENG whose telephone number is (703)756-4699. The examiner can normally be reached M-F, 9AM-6PM PST. 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. /KAREN CHENG/Primary Examiner, Art Unit 1623 /ANAND U DESAI/Supervisory Patent Examiner, Art Unit 1655
Read full office action

Prosecution Timeline

Jan 26, 2024
Application Filed
Jul 29, 2026
Non-Final Rejection mailed — §102, §112, §DP (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
76%
Grant Probability
99%
With Interview (+27.1%)
2y 1m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 687 resolved cases by this examiner. Grant probability derived from career allowance rate.

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