Prosecution Insights
Last updated: October 22, 2026
Application No. 18/849,224

N-TERMINUS ENGINEERING OF INTRACELLULAR POLYPEPTIDES EXPRESSED IN RECOMBINANT EUKARYOTIC HOST CELLS

Non-Final OA §102§112
Filed
Sep 20, 2024
Priority
Apr 01, 2022 — provisional 63/326,564 +2 more
Examiner
TSAY, MARSHA M
Art Unit
1656
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Danstar Ferment AG
OA Round
1 (Non-Final)
46%
Grant Probability
Moderate
1-2
OA Rounds
1y 6m
Est. Remaining
98%
With Interview

Examiner Intelligence

Grants 46% of resolved cases
46%
Career Allowance Rate
387 granted / 851 resolved
-14.5% vs TC avg
Strong +53% interview lift
Without
With
+52.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
52 currently pending
Career history
919
Total Applications
across all art units

Statute-Specific Performance

§101
3.8%
-36.2% vs TC avg
§103
42.1%
+2.1% vs TC avg
§102
11.1%
-28.9% vs TC avg
§112
24.5%
-15.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 851 resolved cases

Office Action

§102 §112
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 election without traverse of Group I, claims 1-2, 7, 11-13, 15-19, to SEQ ID NO: 3, SEQ ID NO: 7, in the reply filed on September 28, 2026, is acknowledged. Claims 3-6, 8-10, 14, 20-22, 25-35, 38-49 are canceled. Claims 23-24, 36-37 are withdrawn. Claims 1-2, 7, 11-13, 15-19, to SEQ ID NO: 3, SEQ ID NO: 7, are under consideration. Priority: This application is a 371 of PCT/IB2023/053276, filed March 31, 2023, which claims benefit of provisional applications 63/326564, filed April 1, 2022, and 63/386394, filed December 7, 2022. 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 1-2, 7, 11-13, 15-19 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 is drawn to a recombinant eukaryotic host cell capable of expressing a heterologous mature polypeptide in an intracellular form. The claim is confusing because it is not clear whether the limitations and/or components recited after “wherein” are comprised in the host cell or part of the host cell. The term “capable” and the limitations that follow appear to be describing a property and/or characteristic of the host cell and the wherein clause limitations are characteristics of the polypeptide to be expressed and are results to be achieved by the host cell. Therefore, for examination and prior art purposes, the claim is still drawn to a recombinant eukaryotic host cell, regardless of its intended uses and/or functions. Claims 2, 7, 11-13, 15-19 are included in this rejection because they are dependent on claim 1 and fail to cure its defects. 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. Claims 1-2, 7, 11-13, 15-19 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Argyros et al. (WO 2018167670, cited as US 20220127564 on IDS 09.20.24; previously cited). As noted above, for examination and prior art purposes, since it is not clear whether the limitations after “wherein” are features that are part of the host cell, instant claim 1 and its dependent claims are interpreted as a recombinant eukaryotic host cell that is able to express a heterologous mature polypeptide in an intracellular form, regardless of the characteristics of the polypeptide to be expressed. Argyros et al. teach recombinant yeast host cells expressing cell-associated heterologous proteins (at least abstract, p. 1-7, 10-24). Therefore, Argyros et al. can be deemed to anticipate instant claims 1-2. Regarding instant claims 7, 11-13, Argyros et al. teach the heterologous protein is a maltogenic alpha-amylase (at least p. 2-3, 15). Regarding instant claims 15-16, Argyros et al. teach the maltogenic alpha-amylase having the amino acid sequence of SEQ ID NO: 108 (p. 45), which has 99.5% and 99.3% sequence identity with instant SEQ ID NO: 3 and 7, respectively. Regarding instant claims 17-18, Argyros et al. teach the recombinant yeast host cell is from the genus Saccharomyces sp (at least p. 2, 5, 13). Regarding instant claim 19, Argyros et al. teach a process for making a cell-associated heterologous protein from a recombinant yeast host cell, comprising propagating the recombinant yeast host cell in a medium placed in a vessel according to a baker’s yeast production method so as to allow the expression of the cell-associated heterologous protein (at least p. 1-2, 5-6, 10-11, 33-41). Claims 1-2, 7, 11-13, 15-19 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Oeser et al. (WO 2020058915, cited as US 11891641 on IDS 09.20.24). Oeser et al. teach recombinant yeast host cells capable of expressing a higher amount per cell of a heterologous protein (at least abstract, p. 1-4, 5-13). Therefore, Oeser et al. can be deemed to anticipate instant claims 1-2. Regarding instant claims 7, 11-13, Oeser et al. teach the heterologous protein is a maltogenic alpha-amylase (at least p. 3-5, 10-11). Regarding instant claims 15-16, Oeser et al. teach the maltogenic alpha-amylase having the amino acid sequence of SEQ ID NO: 3 (p. 11), which has 99.5% and 99.3% sequence identity with instant SEQ ID NO: 3 and 7, respectively. Regarding instant claim 19, Oeser et al. teach a process for making a cell-associated heterologous protein from a recombinant yeast host cell, comprising culturing (i.e. propagating) the recombinant yeast host cell to allow the expression of the heterologous protein (at least p. 4, 33-34, 35-36). No claim is allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Marsha Tsay whose telephone number is (571)272-2938. The examiner can normally be reached 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, Manjunath N. Rao can be reached at 571-272-0939. 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. /Marsha Tsay/Primary Examiner, Art Unit 1656
Read full office action

Prosecution Timeline

Sep 20, 2024
Application Filed
Oct 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
46%
Grant Probability
98%
With Interview (+52.8%)
3y 7m (~1y 6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 851 resolved cases by this examiner. Grant probability derived from career allowance rate.

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