Prosecution Insights
Last updated: April 19, 2026
Application No. 16/719,103

Inhibition Of TCR Signaling With Peptide Variants

Final Rejection §112
Filed
Dec 18, 2019
Examiner
LEE, JIA-HAI
Art Unit
1658
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Signablok Inc.
OA Round
10 (Final)
50%
Grant Probability
Moderate
11-12
OA Rounds
3y 0m
To Grant
97%
With Interview

Examiner Intelligence

Grants 50% of resolved cases
50%
Career Allow Rate
215 granted / 432 resolved
-10.2% vs TC avg
Strong +47% interview lift
Without
With
+47.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
65 currently pending
Career history
497
Total Applications
across all art units

Statute-Specific Performance

§101
2.8%
-37.2% vs TC avg
§103
37.7%
-2.3% vs TC avg
§102
16.0%
-24.0% vs TC avg
§112
19.4%
-20.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 432 resolved cases

Office Action

§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 . Claim Status Claims 12-14 and 16-26 are pending. Claim 12 is currently amended. Claims 1-11, 15, and 26-56 were cancelled. Claim 16 is withdrawn as directed to a non-elected species. Dated 1/28/2021 Claims 12-14 and 17-26 have been examined. Priority This application is a CON of 16/166,984 10/22/2018 PAT 10538558 This application is a DIV of 12/895,454 09/30/2010 PAT 10138276 16/166,984 has PRO 61/247,033 09/30/2009 Sequence Compliance The amendment to claim 12 satisfies sequence compliance. Modified Rejection Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 12-14 and 17-26 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. PNG media_image1.png 404 360 media_image1.png Greyscale NEW MATTER Rejection because the disclosure in the SPEC does not support the peptide formula in claim 12. Applicant disclosed individual class I peptide inhibitor sequences of SEQ ID Nos: 1-26, but the limited disclosure of individual peptide sequences does not support the entire genus of the peptide formula in claim 12 modified with insertion, deletion, and/or consensus as well non-consensus substitutions encompasses 5,760 distinct peptide sequences summarized by the examiner shown as follows. Applicant improperly utilizes domain swap of Y5 tetrapeptide found in one peptide sequence to another peptide sequence to create new peptide sequences not supported by the disclosure. Thus, many individual class I peptide inhibitor sequences such as SEQ ID NO; 17 (GYRTPTLKVFGGFNFSQIL) or SEQ ID NO: 97 (GRKGYRPTPIRVAFGNL) are no longer reading on the NEW MATTER peptide formula in claim 12. 112(a) rejection based on insufficient disclosure. The specification failed to provide a representative number of class I peptide inhibitor sequences to support the entire genus of the peptide formula comprising 5,760 distinct peptide sequences in claim 12 as evidenced by many disclosed class I peptide inhibitor sequences such as SEQ ID NO; 17 (GYRTPTLKVFGGFNFSQIL) or SEQ ID NO: 97 (GRKGYRPTPIRVAFGNL) are no longer reading on the peptide formula in claim 12. Applicant failed to establish correlation of a peptide sequence and class I peptide inhibitor. Applicant disclosed individual class I peptide inhibitor sequences of SEQ ID Nos: 1-26, but not the derivative peptide sequences created by domain swap of Y5 as well as insertion, deletion, and substitution in all possible positions in the peptide formula. Without establishing a correlation between a peptide sequence and the function of class I peptide inhibitor, the specification failed to satisfy written description requirements. Claims 13-14 and 17-26 are rejected as depending on claim 12. The rejection may be overcome by distinctly claiming a peptide sequence with SEQ ID No disclosed in the specification. Applicant’s Arguments The Examiner promised that Y5 support would be accepted when provided on the basis of specific peptides (Remarks, p6, last 3 para) Class I and Class III are characterized by two positively charged residues spaced apart by 4 and 8 amino acids (Remarks, p7, last 4 para to p8). Response to Arguments Applicant's arguments filed 10/15/2025 have been fully considered but they are not persuasive for the reasons as follows. Applicant’s argument (i) is not persuasive because the examiner did not promise anything under lack of sufficient written description. Adding SEQ ID NOs to the tetrapeptide merely makes this application for sequence compliance but does not overcome the 112(a) rejection. The use of domain swap to introduce new peptide sequences is improper without sufficient support by showing the tetrapeptide of Y5 independently correlated with the function of Class 1 peptide inhibitor. In fact, many disclosed Class 1 peptide inhibitor sequences such as SEQ ID NO: 17 and SEQ ID NO: 97 in claim 25 are no longer reading on the improperly created peptide formula in claim 12. Applicant’s argument (ii) is not persuasive because the general description from limited disclosure of Class I peptide inhibitor sequences in SEQ ID Nos: 1-26 is insufficient to establish a correlation between the claimed 5,760 distinct peptide sequences and the function of class I inhibitor. The software or AI generated information may or may be always correct. More specific data support is required to establish correlation of peptide sequence and it function. 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 25 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 25 recites the limitation "Class I peptide inhibitor" in 12. There is insufficient antecedent basis for this limitation in the claim. At least the peptide SEQ ID NO 17 and 97 as claimed do not read on the peptide formula in claim 12 shown by the highlighted sequences. PNG media_image2.png 382 396 media_image2.png Greyscale Response to Arguments Applicant's arguments filed 10/15/2025 have been fully considered but they are not persuasive because many claimed peptides in claim 25, such as SEQ ID Nos: 17 and 97, do not read on the amended peptide formula in claim 12. Thus, claim 25 is properly rejected for lack of antecedent basis. See the highlighted peptide sequence of SEQ ID Nos of 17 and 97 above. Examiner Note: The closest prior art references Sigalow (WO 2008/0762675 A2, previously cited 05/10/2021) disclosed a lipid-peptide conjugate formula (Fig 11), but did not teach the elected peptide species of SEQ ID NO: 96. Allowable Subject Matter The elected species of SEQ ID NO: 96 is allowable as the examiner did not find a prior art teaching the peptide sequence of SEQ ID NO: 96. Conclusion No claim is 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 JIA-HAI LEE whose telephone number is (571)270-1691. The examiner can normally be reached Mon-Fri from 9:00 AM to 6:00 PM. 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. /J.L/Examiner, Art Unit 1658 06-January-2026 /LIANKO G GARYU/ Supervisory Patent Examiner, Art Unit 1654
Read full office action

Prosecution Timeline

Dec 18, 2019
Application Filed
Apr 25, 2021
Non-Final Rejection — §112
Oct 08, 2021
Response Filed
Jan 07, 2022
Final Rejection — §112
Mar 30, 2022
Request for Continued Examination
Apr 01, 2022
Response after Non-Final Action
Aug 01, 2022
Non-Final Rejection — §112
Oct 14, 2022
Response Filed
Dec 25, 2022
Final Rejection — §112
Apr 03, 2023
Request for Continued Examination
Apr 04, 2023
Response after Non-Final Action
Sep 12, 2023
Non-Final Rejection — §112
Dec 07, 2023
Response Filed
Feb 09, 2024
Final Rejection — §112
May 02, 2024
Request for Continued Examination
May 06, 2024
Response after Non-Final Action
Oct 05, 2024
Non-Final Rejection — §112
Dec 05, 2024
Response Filed
Dec 12, 2024
Final Rejection — §112
Jan 07, 2025
Response after Non-Final Action
Feb 18, 2025
Request for Continued Examination
Feb 20, 2025
Response after Non-Final Action
Jul 25, 2025
Non-Final Rejection — §112
Oct 15, 2025
Response Filed
Jan 06, 2026
Final Rejection — §112
Mar 27, 2026
Response after Non-Final Action
Mar 27, 2026
Request for Continued Examination
Mar 30, 2026
Response after Non-Final Action

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

11-12
Expected OA Rounds
50%
Grant Probability
97%
With Interview (+47.2%)
3y 0m
Median Time to Grant
High
PTA Risk
Based on 432 resolved cases by this examiner. Grant probability derived from career allow rate.

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