Prosecution Insights
Last updated: April 19, 2026
Application No. 17/596,183

Anti-CEACAM5 monoclonal antibody and preparation method thereof and use thereof

Non-Final OA §112
Filed
Dec 03, 2021
Examiner
BERHANE, SELAM
Art Unit
1675
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
BIOTHEUS INC.
OA Round
3 (Non-Final)
61%
Grant Probability
Moderate
3-4
OA Rounds
3y 2m
To Grant
99%
With Interview

Examiner Intelligence

Grants 61% of resolved cases
61%
Career Allow Rate
46 granted / 75 resolved
+1.3% vs TC avg
Strong +56% interview lift
Without
With
+55.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
51 currently pending
Career history
126
Total Applications
across all art units

Statute-Specific Performance

§101
1.8%
-38.2% vs TC avg
§103
28.3%
-11.7% vs TC avg
§102
13.1%
-26.9% vs TC avg
§112
39.8%
-0.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 75 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 . DETAILED ACTION Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 11/25/2025 has been entered. Claims 34, 36, 39-47 are withdrawn from consideration pursuant to 37 CFR 1.142(b) as being drawn to nonelected inventions and species, there being no allowable generic or linking claims. Claims 26, 29-33, 35, 37-38, and 48-51 are under consideration in the instant Office Action. Withdrawn Rejections Rejections of claim 29 under 35 U.S.C. 112(d) or pre-AIA 35 U.S.C. 112, 4th paragraph, as being of improper dependent form for failing to further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upon which it depends, or for failing to include all the limitations of the claim upon which it depends are hereby withdrawn in view of Applicant’s arguments which clarify the dependency issue. Rejections of claims 26, 29-33, 35, 37-38, and new claims 48-51 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 are hereby in view of Applicant’s amendments to the claims and arguments. New Rejections 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 29-30 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. Instant claim 29 use the transitional term “having a sequence shown in SEQ ID NO:…”. This term is problematic because it is not immediately clear whether open or closed claim language is intended, Crystal Semiconductor Corp. v. TriTech Microelectronics Int’l Inc., 246 F.3d 1336, 1348, 57 USPQ2d 1953, 1959 (Fed. Cir. 2001) (term “having” in transitional phrase "does not create a presumption that the body of the claim is open"); Regents of the Univ. of Cal. v. Eli Lilly & Co., 119 F.3d 1559, 1573, 43 USPQ2d 1398, 1410 (Fed. Cir. 1997) (in the context of a cDNA having a sequence coding for human PI, the term “having” still permitted inclusion of other moieties), see MPEP 2111.03. Applicant is encouraged to use transitional phrases “comprising of” or “consisting of” to define the scope of a claim with respect to what unrecited additional components, if any, are excluded from the scope of the claims. It is also noted that as written, instant claim 30 requires that the nucleic acid molecule encoding the antibody comprise the recited heavy chain variable region sequences and/or the light chain variable region sequences. Furthermore, the claims only recite an antibody defined by the selection of either the heavy chain variable region sequence or the light chain variable region sequence, and does not require both be present to constitute the full antibody due to the addition of the “or” language. It is unclear what is intended by the claim language as one skilled in the art recognizes that a nucleic acid molecule encoding a monoclonal antibody such as the claimed invention requires the presence of both the heavy and light chain variable regions, complete with defined heavy and light chain CDR sequences. Allowable Subject Matter Claims 26-28, 31-33, 35, 37-38, 48-51 are allowed. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SELAM BERHANE whose telephone number is (571)272-6138. The examiner can normally be reached Monday - Friday, 9-5. 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 Stucker can be reached at 571-272-0911. 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. /SELAM BERHANE/Examiner, Art Unit 1675 /AURORA M FONTAINHAS/Primary Examiner, Art Unit 1675
Read full office action

Prosecution Timeline

Dec 03, 2021
Application Filed
Apr 04, 2025
Non-Final Rejection — §112
Jul 07, 2025
Response Filed
Sep 05, 2025
Final Rejection — §112
Nov 25, 2025
Request for Continued Examination
Dec 01, 2025
Response after Non-Final Action
Dec 11, 2025
Non-Final Rejection — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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2y 5m to grant Granted Feb 24, 2026
Patent 12540175
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Patent 12516113
Humanized anti-IL17A antibody and application thereof
2y 5m to grant Granted Jan 06, 2026
Patent 12514924
HUMANIZED ANTI-CD40 ANTIBODIES AND USES THEREOF
2y 5m to grant Granted Jan 06, 2026
Patent 12496314
Antigen-Binding Domain
2y 5m to grant Granted Dec 16, 2025
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
61%
Grant Probability
99%
With Interview (+55.5%)
3y 2m
Median Time to Grant
High
PTA Risk
Based on 75 resolved cases by this examiner. Grant probability derived from career allow rate.

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