Prosecution Insights
Last updated: April 18, 2026
Application No. 18/043,413

MODIFIED BENZOFURAN-CARBOXAMIDES AS GLUCOSYLCERAMIDE SYNTHASE INHIBITORS

Final Rejection §103
Filed
Feb 28, 2023
Examiner
TOWNSLEY, SARA ELIZABETH
Art Unit
1629
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Merck Sharp & Dohme LLC
OA Round
2 (Final)
25%
Grant Probability
At Risk
3-4
OA Rounds
4y 0m
To Grant
73%
With Interview

Examiner Intelligence

Grants only 25% of cases
25%
Career Allow Rate
95 granted / 381 resolved
-35.1% vs TC avg
Strong +48% interview lift
Without
With
+48.0%
Interview Lift
resolved cases with interview
Typical timeline
4y 0m
Avg Prosecution
50 currently pending
Career history
431
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
40.3%
+0.3% vs TC avg
§102
19.7%
-20.3% vs TC avg
§112
23.5%
-16.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 381 resolved cases

Office Action

§103
FINAL REJECTION Receipt is acknowledged of Applicants' Amendments and Remarks, filed Jan. 16, 2026. Rejections and/or objections not reiterated from previous Office Actions are hereby withdrawn. The rejections and/or objections set forth below are either maintained or newly applied, and constitute the complete set presently applied to the instant claims. STATUS OF THE CLAIMS Claims 1-13 and 18-20 have been canceled. Claims 14-15 have been amended to remove dependencies upon canceled claims. No new claims have been added. Claims 17, 21, and 22 stand withdrawn as drawn to nonelected inventions. Thus, claims 14-17, 21, and 22 now represent all claims currently pending and under consideration. INFORMATION DISCLOSURE STATEMENT No new Information Disclosure Statements (IDS) have been submitted. RESPONSE TO ARGUMENTS Applicant's arguments filed Jan. 16, 2026 have been fully considered but they are not persuasive. Applicant's amendments overcome all the rejections set forth in the non-final action dated 10/16/2025. Applicant further asserts that none of the exemplified compounds of Luithle et al. fall within the scope of claim 14 (Remarks, p. 8). While it is acknowledged that Luithle et al. does not exemplify any compounds identical to those recited by claim 14, certain compounds of claim 14 are nonetheless obvious over Luithle et al., as detailed below. NEW OBJECTIONS/REJECTIONS Claim Objections Claims 14-16 are objected to because of the following informalities: Claim 14 recites the following compounds in duplicate: (S)-7-(2-propoxyphenyl)-N-quinuclidin-3-yl-benzofuran-2-carboxamide; and (R)-7-(2-propoxyphenyl)-N-quinuclidin-3-yl-benzofuran-2-carboxamide. Appropriate correction is required. Rejections under 35 USC §103 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 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 14-16 are rejected under 35 U.S.C. 103 as being unpatentable over Luithle et al. (USPN 10,214,524, cited in the previous action). Luithle et al. disclose and claim compounds for the treatment and/or prophylaxis of diseases and for improving perception, concentration, learning, and/or memory, e.g., Alzheimer's disease or schizophrenia (abstract; claim 1). In particular, Luithle et al. exemplify and claim N-[(3R)-1-azabicyclo[2.2.2]oct-3-yl]-7-[2-(methoxy)phenyl]-1-benzofuran-2-carboxamide (compound 130), PNG media_image1.png 200 400 media_image1.png Greyscale as well as the (S)-isomer and the hydrochloride salts thereof (Examples 100, 102, 130; claim 11). Compound 130 of Luithle et al. differs from the compounds recited by claim 14, e.g., ((R) and (S))-7-(2-propoxyphenyl)-N-quinuclidin-3-yl-benzofuran-2-carboxamide (compound 23), and ((R) and (S))-7-(2-butoxyphenyl)-N-quinuclidin-3-yl-benzofuran-2-carboxamide (compound 21), having the structural formulae, PNG media_image2.png 412 786 media_image2.png Greyscale in that compound 130 of Luithle et al. bears a methoxy substituent instead of propoxy or butoxy. However, Luithle et al. exemplify compound 130 as a species of formula (Ic), having the structural formula, PNG media_image3.png 200 400 media_image3.png Greyscale wherein A is oxygen or sulfur, E is phenylene, and R4 is C1-6-alkoxy (claim 9). Therefore, it would have been predictable to one of ordinary skill in the art as of the effective filing date to modify the methoxy substituent of compound 130 of Luithle et al. to propoxy or butoxy to arrive at the claimed compounds with a reasonable expectation of success, because Luithle et al. explicitly disclose, teach, and suggest that the C1-alkoxy (methoxy) substituent of compound 130 can be modified to any C1-6-alkoxy, e.g., C3-alkoxy (propoxy) or C4-alkoxy (butoxy) with no loss of function. Further, as recognized by MPEP § 2144.09, “[N]ovel members of a homologous series of chemical compounds must possess some unobvious or unexpected beneficial properties not possessed by a homologous compound disclosed in the prior art.” We stated that novelty alone, without invention, is not sufficient to lend patentability to a claim. . . . [C]hemists understand that members of a homologous series of chemical compounds possess the same principal characteristics which vary gradually from member to member, and that knowing the chemical and physical properties of one of the members suggests the properties of the other members.” In re Norris, 179 F.2d 970, 84 USPQ 458 (CCPA 1950). Thus, compounds which are homologues (i.e., compounds differing regularly by the successive addition of the same functional group, e.g., CH2) are generally of sufficiently close structural similarity that there is a presumed expectation that such compounds possess similar properties. See also In re Wilder, 563 F.2d 457, 195 USPQ 426 (CCPA 1977). CONCLUSION No claims are 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. CORRESPONDENCE Any inquiry concerning this communication or earlier communications from the examiner should be directed to SARA E. TOWNSLEY whose telephone number is 571-270-7672. The examiner can normally be reached on Mon-Fri from 9:00 am to 6:00 pm (EST). If attempts to reach the examiner by telephone are unsuccessful, the examiner's supervisor, Jeff S. Lundgren, can be reached at 571-272-5541. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://portal.uspto.gov/external/portal. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). /SARA ELIZABETH TOWNSLEY/Examiner, Art Unit 1629 /JEFFREY S LUNDGREN/Supervisory Patent Examiner, Art Unit 1629
Read full office action

Prosecution Timeline

Feb 28, 2023
Application Filed
Oct 11, 2025
Non-Final Rejection — §103
Jan 16, 2026
Response Filed
Feb 12, 2026
Final Rejection — §103
Mar 31, 2026
Examiner Interview Summary
Mar 31, 2026
Applicant Interview (Telephonic)
Apr 02, 2026
Request for Continued Examination
Apr 07, 2026
Response after Non-Final Action

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600738
QUINOLINONE DERIVATIVE COMPOUND SELECTIVELY BINDING TO CYSTEINE, PEPTIDE CONJUGATE THEREOF, AND ANTIBODY-DRUG CONJUGATE COMPRISING SAME
2y 5m to grant Granted Apr 14, 2026
Patent 12582633
METHODS OF TREATING SEVERE ACUTE RESPIRATORY SYNDROME
2y 5m to grant Granted Mar 24, 2026
Patent 12582639
PREVENTIVE, RELIEF OR THERAPEUTIC USE OF 2,3,5-SUBSTITUTED THIOPHENE COMPOUND AGAINST GASTROINTESTINAL STROMAL TUMOR
2y 5m to grant Granted Mar 24, 2026
Patent 12570663
CRYSTAL FORMS OF AN ANTI-SARS COV-2 AGENT
2y 5m to grant Granted Mar 10, 2026
Patent 12552774
METHOD FOR PREPARING PYROTINIB
2y 5m to grant Granted Feb 17, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

3-4
Expected OA Rounds
25%
Grant Probability
73%
With Interview (+48.0%)
4y 0m
Median Time to Grant
Moderate
PTA Risk
Based on 381 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month