Office Action Predictor
Last updated: April 16, 2026
Application No. 19/207,035

CANINE PD-L1 ANTIBODY, ANTIGEN BINDING FRAGMENTS THEREOF, AND METHODS OF USE THEREOF

Non-Final OA §112
Filed
May 13, 2025
Examiner
GEORGE, DENNIS CHERIAN
Art Unit
1644
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Purdue Research Foundation
OA Round
1 (Non-Final)
25%
Grant Probability
At Risk
1-2
OA Rounds
3y 10m
To Grant
25%
With Interview

Examiner Intelligence

Grants only 25% of cases
25%
Career Allow Rate
2 granted / 8 resolved
-35.0% vs TC avg
Minimal +0% lift
Without
With
+0.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 10m
Avg Prosecution
17 currently pending
Career history
25
Total Applications
across all art units

Statute-Specific Performance

§101
2.6%
-37.4% vs TC avg
§103
25.0%
-15.0% vs TC avg
§102
18.9%
-21.1% vs TC avg
§112
27.0%
-13.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 8 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 . Status of Claims Applicant’s election for continued examination without traverse of Invention group I consisting of claims 1-7, and 14-20 in the reply filed on 10/21/2025 is acknowledged. Claims 8-13 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention group. Claims 1 and 14 are amended. Claims 1-7, and 14-20 are currently pending and under examination. Priority The application claims benefit of provisional application 63/383,909 filed 11/15/2022. Priority date of 11/15/2022 is acknowledged. Nucleotide and/or Amino Acid Sequence Disclosures Summary of Requirements for Patent Applications Filed On Or After July 1, 2022, That Have Sequence Disclosures 37 CFR 1.831(a) requires that patent applications which contain disclosures of nucleotide and/or amino acid sequences that fall within the definitions of 37 CFR 1.831(b) must contain a “Sequence Listing XML”, as a separate part of the disclosure, which presents the nucleotide and/or amino acid sequences and associated information using the symbols and format in accordance with the requirements of 37 CFR 1.831-1.835. This “Sequence Listing XML” part of the disclosure may be submitted: 1. In accordance with 37 CFR 1.831(a) using the symbols and format requirements of 37 CFR 1.832 through 1.834 via the USPTO patent electronic filing system (see Section I.1 of the Legal Framework for Patent Electronic System (https://www.uspto.gov/PatentLegalFramework), hereinafter “Legal Framework”) in XML format, together with an incorporation by reference statement of the material in the XML file in a separate paragraph of the specification (an incorporation by reference paragraph) as required by 37 CFR 1.835(a)(2) or 1.835(b)(2) identifying: a. the name of the XML file b. the date of creation; and c. the size of the XML file in bytes; or 2. In accordance with 37 CFR 1.831(a) using the symbols and format requirements of 37 CFR 1.832 through 1.834 on read-only optical disc(s) as permitted by 37 CFR 1.52(e)(1)(ii), labeled according to 37 CFR 1.52(e)(5), with an incorporation by reference statement of the material in the XML format according to 37 CFR 1.52(e)(8) and 37 CFR 1.835(a)(2) or 1.835(b)(2) in a separate paragraph of the specification identifying: a. the name of the XML file; b. the date of creation; and c. the size of the XML file in bytes. SPECIFIC DEFICIENCIES AND THE REQUIRED RESPONSE TO THIS NOTICE ARE AS FOLLOWS: This application contains sequence disclosures in accordance with the definitions for nucleotide and/or amino acid sequences set forth in 37 CFR 1.831(a) and 1.831(b). However, this application fails to comply with the requirements of 37 CFR 1.831-1.834. The examiner has noted that Applicant’s amended sequences for claim 1 and 14 do not have the corresponding amendments within the XML file. The amended sequences as now recited in claims 1 and 14 require their own unique SEQ ID NO. Applicant must provide: • A replacement “Sequence Listing XML” part of the disclosure, as described above in item 1. or 2., as well as • A statement that identifies the location of all additions, deletions, or replacements of sequence information in the “Sequence Listing XML” as required by 1.835(b)(3); • A statement that indicates support for the amendment in the application, as filed, as required by 37 CFR 1.835(b)(4); • A statement that the “Sequence Listing XML” includes no new matter in accordance with 1.835(b)(5); and • A substitute specification in compliance with 37 CFR 1.52, 1.121(b)(3), and 1.125 inserting the required incorporation by reference paragraph as required by 37 CFR 1.835(b)(2), consisting of: o A copy of the previously-submitted specification, with deletions shown with strikethrough or brackets and insertions shown with underlining (marked-up version); o A copy of the amended specification without markings (clean version); and A statement that the substitute specification contains no new matter. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(d): (d) REFERENCE IN DEPENDENT FORMS.—Subject to subsection (e), a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. The following is a quotation of pre-AIA 35 U.S.C. 112, fourth paragraph: Subject to the following paragraph [i.e., the fifth paragraph of pre-AIA 35 U.S.C. 112], a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. Claims 3-5, 7, and 16-17 are rejected under 35 U.S.C. 112(d) or pre-AIA 35 U.S.C. 112, 4th paragraph, as being of improper dependent form for failing to further limit the subject matter of the claim upon which it depends, or for failing to include all the limitations of the claim upon which it depends. Dependent claims 3-4 and 16-17 recite CDRs of the antibody, but these CDRs are already present in the antibody recited in independent claims 1 and 14. Furthermore, dependent claims 5 and 7 recite the antibodies as caninized, but the antibody from independent claim 1 is already a caninized antibody. Applicant may cancel the claim(s), amend the claim(s) to place the claim(s) in proper dependent form, rewrite the claim(s) in independent form, or present a sufficient showing that the dependent claim(s) complies with the statutory requirements. Allowable Subject Matter Claims 1-7, and 14-20 are allowable over the prior art. The closest prior art that matches SEQ ID NO: 27 of claim 1 is light chain of a chimeric anti-IL-31 monoclonal antibody disclosed as SEQ ID NO: 17 by Busfield and Wilson (WO2022109403) with an 86.6% query match. PNG media_image1.png 417 669 media_image1.png Greyscale Furthermore, the closest prior art that matches SEQ ID NO: 3 of claim 1 is heavy chain domain SEQ ID NO: 28 of an antibody or antigen binding fragment that binds to CD20 as disclosed by Gearing (WO2013054127) with a 92.5% query match. PNG media_image2.png 758 657 media_image2.png Greyscale As allowable subject matter has been indicated, applicant's reply must either comply with all formal requirements or specifically traverse each requirement not complied with. See 37 CFR 1.111(b) and MPEP § 707.07(a). Conclusion Claims 3-5, 7, and 16-17 are rejected. Claims 1 and 14 are objected due to deficiencies in sequence disclosures. Claims 2, 6, 15, and 18-20 are allowable. Any inquiry concerning this communication or earlier communications from the examiner should be directed to DENNIS GEORGE whose telephone number is (571)270-0340. The examiner can normally be reached M-F 8:30am - 5pm 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, Daniel E Kolker can be reached at (571) 272-3181. 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. /DENNIS GEORGE/Examiner, Art Unit 1644 /DANIEL E KOLKER/Supervisory Patent Examiner, Art Unit 1644
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Prosecution Timeline

May 13, 2025
Application Filed
Dec 29, 2025
Non-Final Rejection — §112
Jan 30, 2026
Interview Requested
Mar 11, 2026
Examiner Interview Summary
Mar 25, 2026
Response Filed

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12371476
CANINE PARVOVIRUS (CPV) NANOBODY CPV-VHH-H1 AND USE THEREOF
2y 5m to grant Granted Jul 29, 2025
Study what changed to get past this examiner. Based on 1 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
25%
Grant Probability
25%
With Interview (+0.0%)
3y 10m
Median Time to Grant
Low
PTA Risk
Based on 8 resolved cases by this examiner. Grant probability derived from career allow rate.

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