Prosecution Insights
Last updated: July 05, 2026
Application No. 18/039,530

Cyclic Tetrapeptides and Metal Complexes Thereof

Non-Final OA §102§112
Filed
May 31, 2023
Priority
Dec 03, 2020 — EU 20211457.5 +1 more
Examiner
NIEBAUER, RONALD T
Art Unit
1658
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Universität Zürich
OA Round
1 (Non-Final)
41%
Grant Probability
Moderate
1-2
OA Rounds
6m
Est. Remaining
75%
With Interview

Examiner Intelligence

Grants 41% of resolved cases
41%
Career Allowance Rate
298 granted / 724 resolved
-18.8% vs TC avg
Strong +34% interview lift
Without
With
+33.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
60 currently pending
Career history
795
Total Applications
across all art units

Statute-Specific Performance

§101
1.7%
-38.3% vs TC avg
§103
41.8%
+1.8% vs TC avg
§102
25.4%
-14.6% vs TC avg
§112
5.3%
-34.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 724 resolved cases

Office Action

§102 §112
DETAILED ACTION 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 and Claim Status Applicant's election with traverse of Group 1 and the species of compound X7 in the reply filed on 2/12/26 is acknowledged. The traversal is on the ground(s) that the prior art does not teach compound X7. This is not found persuasive because instant claim 1 is much broader than compound X7 and the art cited in the restriction requirement and the art cited below show that claim 1 is not free of the prior art. The requirement is still deemed proper and is therefore made FINAL. Claims 14-15 are withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected invention, there being no allowable generic or linking claim. Applicant timely traversed the restriction (election) requirement in the reply filed on 2/12/26. As recognized by applicant, claims 4 and 10 do not read on the elected species. Instant claim 12 has been interpreted as reading on the elected species since it contains -CH2SH which is interpreted as a linker suitable for binding. A compound consisting of compound X7 was found to be free of the prior art. The search was extended in accord with MPEP 803.02. Claims 4 and 10 are withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected species, there being no allowable generic or linking claim. Applicant timely traversed the restriction (election) requirement in the reply filed on 2/12/26. Claims 1-3, 5-9, 11-13 and 16 are being examined. Priority The priority information is found in the filing receipt dated 4/1/24. Information Disclosure Statement The information disclosure statement filed 7/31/23 fails to comply with the provisions of 37 CFR 1.97, 1.98 and MPEP § 609 because 37 CFR 1.98(b)(5) states that each publication listed must include the relevant pages of the publication. In the instant case, NPL references 1-2, 5-7 and 10 do not include any page numbers. Further, it appears that what was submitted for NPL references 1-2, 5-7 and 10 amounts to title pages or tables of contents which are not necessarily all of the relevant pages of the publication. It has been placed in the application file, but the information referred to therein has not been considered as to the merits. Applicant is advised that the date of any re-submission of any item of information contained in this information disclosure statement or the submission of any missing element(s) will be the date of submission for purposes of determining compliance with the requirements based on the time of filing the statement, including all certification requirements for statements under 37 CFR 1.97(e). See MPEP § 609.05(a). The information disclosure statement (IDS) submitted on 5/8/25 and 1/29/25 have been considered by the examiner. Specification The disclosure is objected to because of the following informalities: The disclosure is objected to because it contains an embedded hyperlink and/or other form of browser-executable code specifically page 38 lines 9 and 12. Applicant is required to delete the embedded hyperlink and/or other form of browser-executable code; references to websites should be limited to the top-level domain name without any prefix such as http:// or other browser-executable code. See MPEP § 608.01. 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. Claims 1-3, 5-9, 11-13 and 16 are 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 1 shows a formula and after the formula recites (1) as well as (1a). The structures of formula 1 and 1a (see instant specification page 2) are not the same. The claim is confusing because it shows a single formula yet refers to both (1) and (1a). It is not clear if claim 1 is intended to be limited to formula 1a. It is not clear if claim 16 is a proper dependent claim. None of the dependent claims clarify the claim scope. Claim 1 refers to C1-4-alkyl or phenyl is substituted by one or more substituents independently selected from and then recites a list. Claim 1 refers to a 5- to 10-membered heterocycle of the cyclic hydrocarbon moiety may optionally be substituted by one or more substituents selected from and then recites a list. Claim 3 refers to substituted by one or more substituents independently selected from and then recites a list. With respect to the lists recited above, none of them include the word ‘or’ or ‘and’ between the last 2 options. As such, it is not clear if the groups are open or closed. The 4th to last line of claim 8 recites ‘alkyis’. The meaning of this term is unclear. It is unclear if a word in misspelled or if a space is missing. Although unclear, the claims have been given the broadest reasonable interpretation consistent with the specification. 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. Claim(s) 1-3, 5-8, 11-13 and 16 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Brasun et al. (NPL citation 3 of IDS 7/31/23; ‘Brasun’). Brasun teach 14-membered cyclic tetrapeptides containing histidine and lysine side chains. (abstract). Brasun shows the structure of a compound in figure 1: PNG media_image1.png 312 312 media_image1.png Greyscale . Brasun teach that the compound forms complexes with copper (abstract and Table 1). In relation to the compound of claims 1-3, 5-8, 11-12 and 16, the compound of Brasun is such that each R is H; RA1 and RA2 are each a His side chain which is a C1-3-alkyl (CH2) substituted with a 5-10 membered heterocycle specifically imidazolyl (-CH2-imidazolyl); RB1 is the Lys side chain which is a hydrocarbon containing 1-12 carbons which is substituted with NH2, the Lys side chain is also a linker suitable for binding due to the NH2; and RB2 is H. The stereochemistry of the compound of Brasun is as in formula 3 of claim 2. In relation to claim 13, Brasun teach that the compound forms complexes with copper (abstract and Table 1). Claim(s) 1-3, 5-9 and 11 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Sarfati et al. (NPL citation 8 of IDS 7/31/23; ‘Sarfati’). Sarfati teach compound 2b (page 256 1st column): PNG media_image2.png 220 288 media_image2.png Greyscale . In relation to the compound of claims 1-3, 5-9 and 11, the compound of Sarfati is such that 2 of the Rs are H and 2 of the Rs are -CH3; RA1 and RA2 are the Phe side chain which is a C1-3-alkyl (CH2) substituted with a cyclic hydrocarbon specifically phenyl (-CH2-phenyl); RB1 and RB2 are H. Since RB1 and RB2 are H, the stereochemistry is either of formula 2 or 3 of claim 2. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to RONALD T NIEBAUER whose telephone number is (571)270-3059. The examiner can normally be reached M - F 6:30 - 2:30 EST. 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, Melissa Fisher can be reached at 571-270-7430. 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. RONALD T. NIEBAUER Primary Examiner Art Unit 1658 /RONALD T NIEBAUER/Examiner, Art Unit 1658
Read full office action

Prosecution Timeline

May 31, 2023
Application Filed
May 31, 2023
Response after Non-Final Action
Feb 02, 2026
Interview Requested
Feb 09, 2026
Examiner Interview Summary
Feb 09, 2026
Applicant Interview (Telephonic)
Apr 14, 2026
Non-Final Rejection mailed — §102, §112 (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
41%
Grant Probability
75%
With Interview (+33.7%)
3y 7m (~6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 724 resolved cases by this examiner. Grant probability derived from career allowance rate.

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