Prosecution Insights
Last updated: April 18, 2026
Application No. 17/927,094

MITOCHONDRIAL TARGETING COMPOUNDS FOR THE TREATMENT OF ASSOCIATED DISEASES

Non-Final OA §102§103§112
Filed
Nov 22, 2022
Examiner
KIFLE, BRUCK
Art Unit
1624
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
The Regents of the University of Michigan
OA Round
3 (Non-Final)
79%
Grant Probability
Favorable
3-4
OA Rounds
2y 0m
To Grant
95%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allow Rate
1356 granted / 1712 resolved
+19.2% vs TC avg
Strong +16% interview lift
Without
With
+15.9%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 0m
Avg Prosecution
27 currently pending
Career history
1739
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
12.2%
-27.8% vs TC avg
§102
13.0%
-27.0% vs TC avg
§112
53.7%
+13.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1712 resolved cases

Office Action

§102 §103 §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 . Applicant’s amendments and remarks filed December 3, 2025 have been received and reviewed. Claims 1, 7, 9 and 30 are now pending in this application. Claim 30 has approximately 250 species. This number of compounds cannot be considered a reasonable number according to rule 1.141(a). In re Fressola, 22 USPQ 2nd 1828, indicates that the Examiner may reject for Applicants failure to follow a Rule. § 1.141 Different inventions in one national application. (a) Two or more independent and distinct inventions may not be claimed in one national application, except that more than one species of an invention, not to exceed a reasonable number, may be specifically claimed in different claims in one national application, provided the application also includes an allowable claim gen­eric to all the claimed species and all the claims to species in excess of one are written in dependent form (§ 1.75) or otherwise include all the limitations of the generic claim. Applicants need to rewrite the claim as a series of independent claims wherein each claim has a reasonable number of species or rewrite the claim as a dependent claim if all of the species are compounds of claim 1. Election/Restrictions Applicants are advised of MPEP 803.02 Restriction - Markush Claims [R - 2], fourth and fifth paragraph, where is stated: “As an example, in the case of an application with a Markush - type claim drawn to the compound C - R, wherein R is a radical selected from the group consisting of A, B, C, D, and E, the examiner may require a provisional election of a single species, CA, CB, CC, CD, or CE. The Markush - type claim would then be examined fully with respect to the elected species and any species considered to be clearly unpatentable over the elected species. If on examination the elected species is found to be anticipated or rendered obvious by prior art, the Markush - type claim and claims to the elected species shall be rejected, and claims to the non - elected species would be held withdrawn from further consideration. As in the prevailing practice, a second action on the rejected claims would be made final.” (emphasis added). On the other hand, should no prior art be found that anticipates or renders obvious the elected species, the search of the Markush-type claim will be extended. If prior art is found that anticipates or renders obvious the Markush-type claim with respect to a non-elected species, the Markush-type claim shall be rejected and claims to the nonelected species held withdrawn from further consideration. The prior art search, however, will not be extended unnecessarily to cover all nonelected species. Should applicant, in response to this rejection of the Markush-type claim, overcome the rejection, as by amending the Markush-type claim to exclude the species anticipated or rendered obvious by the prior art, the amended Markush-type claim will be reexamined. The prior art search will be extended to the extent necessary to determine patentability of the Markush-type claim. In the event prior art is found during the reexamination that anticipates or renders obvious the amended Markush-type claim, the claim will be rejected and the action made final. Amendments submitted after the final rejection further restricting the scope of the claim may be denied entry. Claim Rejections - 35 USC § 112 Claim 9 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 9 is still a duplicate of claim 1 as presented. A compound is still a compound no matter where it is present. If a pharmaceutical composition is intended, then language, such as, “A pharmaceutical composition comprising an effective amount of a compound according to claim 1 and a pharmaceutically acceptable carrier” is suggested. Applicants have not addressed this rejection. Claim Rejections - 35 USC § 102 The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claims 1 and 9 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Reyes et al. (US 8,722,742). The claim reads on the compound RN 1181653-41-7 CAPLUS CN 3-Piperidinecarboxylic acid, 1-[[4-(4- morpholinylsulfonyl)phenyl]sulfonyl]-, (3S)- (CA INDEX NAME) PNG media_image1.png 221 456 media_image1.png Greyscale . 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. Claims 1, 7, 9 and 30 are rejected under 35 U.S.C. 103 as being unpatentable over Koos et al. (US 11,241,427). The reference teaches the compound depicted below. RN 460736-67-8 CAPLUS CN 3-Piperidinecarboxylic acid, 1-[[4-[(diethylamino)sulfonyl]phenyl]sulfonyl]-, ethyl ester (CA INDEX NAME) PNG media_image2.png 265 488 media_image2.png Greyscale . The claims differ by excluding this compound by proviso. However, this prior art compound renders homologues in the claims. That is, the claimed compound wherein R1 represents -N(Et)(Pr) or -N(CH((CH3)(CH3))(Et) or -N(Me)(Me) or -N(Pr)(Pr) are rendered obvious by the prior art species instantly excluded by proviso. Compounds that differ only by the presence of an extra methyl group are homologues. Homologues are of such close structural similarity that the disclosure of a compound renders prima facie obvious its homologue. The homologue is expected to be prepareable by the same method and to have the same properties. This expectation is then deemed the motivation for preparing homologues. Homologues are obvious even in the absence of a specific teaching to methylate, In re Wood 199 USPQ 137; In re Hoke 195 USPQ 148; In re Lohr 137 USPQ 548; In re Magerlein 202 USPQ 473; In re Wiechert 152 USPQ 249; Ex parte Henkel 130 USPQ 474; In re Fauque 121 USPQ 425; In re Druey 138 USPQ 39. In all of these cases, the close structural similarity of two compounds differing by only one (or two) methyl groups sufficed; no specific teaching to methylate was present or required. None of these cases has been overruled and indeed the examiner is unaware of any post Lohr case in which motivation is required to put a methyl group on an old compound. 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 BRUCK KIFLE whose telephone number is (571)272-0668. The examiner can normally be reached 8 AM - 6 PM, M-F. 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, Jeffrey H. Murray can be reached at 571-272-9023. 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. December 31, 2025 /BRUCK KIFLE/Primary Examiner, Art Unit 1624
Read full office action

Prosecution Timeline

Nov 22, 2022
Application Filed
Sep 13, 2025
Non-Final Rejection — §102, §103, §112
Dec 03, 2025
Response Filed
Dec 31, 2025
Final Rejection — §102, §103, §112
Mar 30, 2026
Response after Non-Final Action
Apr 06, 2026
Request for Continued Examination
Apr 07, 2026
Response after Non-Final Action
Apr 11, 2026
Non-Final Rejection — §102, §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600732
BIFUNCTIONAL COMPOUNDS FOR DEGRADING BTK VIA UBIQUITIN PROTEOSOME PATHWAY
2y 5m to grant Granted Apr 14, 2026
Patent 12595238
PROCESS FOR PRODUCING HEXAHYDRO 1,3,5-TRINITRO-1,3,5-TRIAZINE AND OCTAHYDRO-1,3,5,7-TETRANITRO-1,3,5,7-TETRAZOCINE
2y 5m to grant Granted Apr 07, 2026
Patent 12583863
SYNTHETICALLY MODIFIABLE ION CHANNELS
2y 5m to grant Granted Mar 24, 2026
Patent 12577239
NOVEL SULFILIMINES OR SULFOXIMINES CONTAINING FUNGICIDAL HETEROCYCLIC COMPOUNDS
2y 5m to grant Granted Mar 17, 2026
Patent 12566113
REVERSIBLE FIXING REAGENTS AND METHODS OF USE THEREOF
2y 5m to grant Granted Mar 03, 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
79%
Grant Probability
95%
With Interview (+15.9%)
2y 0m
Median Time to Grant
High
PTA Risk
Based on 1712 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