Prosecution Insights
Last updated: August 14, 2026
Application No. 18/547,525

DNASE VARIANTS

Non-Final OA §102§103
Filed
Aug 23, 2023
Priority
Mar 15, 2021 — DK PA 2021 00261 +1 more
Examiner
HUTSON, RICHARD G
Art Unit
1652
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Novozymes A/S
OA Round
2 (Non-Final)
65%
Grant Probability
Favorable
2-3
OA Rounds
6m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 65% — above average
65%
Career Allowance Rate
586 granted / 902 resolved
+5.0% vs TC avg
Strong +53% interview lift
Without
With
+52.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 6m
Avg Prosecution
55 currently pending
Career history
955
Total Applications
across all art units

Statute-Specific Performance

§101
3.4%
-36.6% vs TC avg
§103
22.2%
-17.8% vs TC avg
§102
23.2%
-16.8% vs TC avg
§112
39.5%
-0.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 902 resolved cases

Office Action

§102 §103
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 . Applicant’s cancellation of claims 5, 21 and amendment of claim 1, 8 and the addition of new claims 22-25, in the paper of 6/8/2026, is acknowledged. Applicants' arguments filed on 6/8/2026, have been fully considered and are deemed to be persuasive to overcome some of the rejections previously applied. Rejections and/or objections not reiterated from previous office actions are hereby withdrawn. Claims 1, 3, 4, 6-9, 11, 13, 14, 18, 19, 22-24 are still at issue and are present for examination. Election/Restrictions Applicant's election with traverse of the invention of Group 1, claims 1-9, 11, 15-21, to a DNase variant, in the paper of 1/14/2026, is acknowledged. Applicant's election with traverse of the following species: Species Group 1: Y182H; Species Group 2: S68; Species Group 3: P in position 22, L in position 27, P in position 39, G in position 42, D in position 11; Species Group 5: W57S; in the paper of 1/14/2026, is acknowledged. It is noted that applicants did not elect a species from Species groups 4, 6 and 7. Claims 13, 14 and 24 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected species. Claim Objections Claims 3, 4, 6-8, 18, 19 are objected to because of the following informalities: Claims 3, 4, 6-8, 18, 19 depend from rejected claim 1. Appropriate correction is required. Claim Rejections - 35 USC § 102 The rejection of claim(s) 1, 5, 9, 11, 15, 16, 17 under 35 U.S.C. 102(a)(1) as being anticipated by Beier et al. (WO 2018/011276) is withdrawn based upon applicants amendment of the claims in the paper of 6/8/2026. Claim Rejections - 35 USC § 103 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 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claim(s) 1, 9, 11 is/are rejected under 35 U.S.C. 103 as being unpatentable over Beier et al. (WO 2018/011276) and Zhu et al. (Proceedings of the National Academy, Vol 113, No. 46, pp 12496-12951, Nov 2016). As stated previously, Beier et al. (WO 2018/011276) teach Bacillus CIBI DNase variants and uses thereof. Beier et al. (WO 2018/011276) teach detergent compositions comprising DNase variants exhibiting alterations relative to the parent DNase in one or more properties including wash performance, detergent stability and/or storage stability. Beier et al. (WO 2018/011276) teach a DNase variant comprising the amino acid sequence of SEQ ID NO:1 (90.1% sequence identity to instant SEQ ID NO:1). Beier et al. (WO 2018/011276) teach the above DNase variant of SEQ ID NO:1 comprising a S68V, S68I, S68W and S68L substitutions (see page 2lines 22 thru 35 and supporting text). Zhu et al. disclose analysis characterizing hydrophobicity of amino acid side chains in a protein environment via measuring contact angle of a water nanodroplet on planar peptide network. Zhu et al. teach that expectedly, all of the planar peptide networks with nonpolar amino acids are hydrophobic due to θ > 90°, whereas all of the planar peptide networks of the polar and charged amino acids are hydrophilic due to θ < 90°. Planar peptide networks of the charged amino acids exhibit complete-wetting behavior due to θ = 0. Zhu et al. disclose that the amino acids comprising nonpolar side chains include isoleucine, alanine, phenylamine, leucine, methionine, proline, valine and tryptophan (Table 1, p 12948). Before the effective filing date, one of ordinary skill in the art would have been motivated to make similar amino acid substitutions at position S68 of the DNase taught by Beier et al. as a means of identifying DNase variants with improved properties including wash performance, detergent stability and/or storage stability. The obvious amino acid substitutions include those amino acids with similar nonpolar amino acid side chains as taught by Beier et al. which include valine, isoleucine, tryptophan and leucine (i.e. S68V, S68I, S68W and S68L). The obvious amino acids include other nonpolar amino acids such as methionine (i.e. S68M) as taught by Zhu et al.. The expectation of success is high based upon the high level of skill in the art of recombinant protein engineering as exemplified by the teachings of Beier et al. who teach all the methods required to make the obvious DNase variants. Thus claim(s) 1, 9, 11 is/are rejected under 35 U.S.C. 103 as being unpatentable over Beier et al. (WO 2018/011276) and Zhu et al. (Proceedings of the National Academy, Vol 113, No. 46, pp 12496-12951, Nov 2016). Remarks No claim is allowed. Conclusion 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 RICHARD G HUTSON whose telephone number is (571)272-0930. The examiner can normally be reached 6-3 EST Mon-Fri. 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, Robert Mondesi can be reached at (408) 918-7584. 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. rgh 7/24/2026 /RICHARD G HUTSON/Primary Examiner, Art Unit 1652
Read full office action

Prosecution Timeline

Aug 23, 2023
Application Filed
Mar 09, 2026
Non-Final Rejection mailed — §102, §103
Jun 08, 2026
Response Filed
Jul 28, 2026
Final Rejection mailed — §102, §103
Aug 05, 2026
Response after Non-Final Action

Precedent Cases

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

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Prosecution Projections

2-3
Expected OA Rounds
65%
Grant Probability
99%
With Interview (+52.9%)
3y 6m (~6m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 902 resolved cases by this examiner. Grant probability derived from career allowance rate.

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