Prosecution Insights
Last updated: October 21, 2026
Application No. 18/569,808

VARIANT ENZYMES AND USES THEREOF

Final Rejection §112§DP
Filed
Dec 13, 2023
Priority
Jun 30, 2021 — provisional 63/216,612 +1 more
Examiner
HUTSON, RICHARD G
Art Unit
1652
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Danisco US Inc.
OA Round
2 (Final)
65%
Grant Probability
Favorable
3-4
OA Rounds
7m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 65% — above average
65%
Career Allowance Rate
592 granted / 909 resolved
+5.1% vs TC avg
Strong +53% interview lift
Without
With
+52.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 6m
Avg Prosecution
58 currently pending
Career history
961
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
23.3%
-16.7% vs TC avg
§112
39.5%
-0.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 909 resolved cases

Office Action

§112 §DP
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 amendment of claims 1, 7, 8, 13, 15 and 16, in the paper of 8/5/2026, is acknowledged. Applicants' arguments filed on 7/29/2026, 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 Rejections and/or objections not reiterated from previous office actions are hereby withdrawn.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 1-13, 15-17 are still at issue and are present for examination. Election/Restrictions Applicant's election with traverse of the invention of the following species: Species Group 1: R040A/T. Species Group 2: PEV304, i.e.: R40A-T64V-S70E-T117L-T177N-I178L-F180P-Y182A-R190L-S205G-F207T-S212D- F226L-A236P-Y239I-L249P-S252I-E254Q-L258F. Species Group 3: improved stability. Species Group 4: polyethylene terephthalate (PET). Species Group 5: cellulase. in the paper of 3/24/2026, is acknowledged. Applicant’s election of the above species in the reply filed on 3/24/2026 is acknowledged. Because applicant did not distinctly and specifically point out the supposed errors in the restriction requirement, the election has been treated as an election without traverse (MPEP § 818.01(a)). Claim Objections Claims 4 is objected to because of the following informalities: Claim 4 recites “R40T” and “R40A” whereas claim 1 from which claim 4 depends recites “R040A/T”. It is suggested that applicants maintain consistency throughout the specification and claims (i.e. R040A/T; R040T and R040A) Appropriate correction and/or comment is required. 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 2 and 3 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. Claims 2 and 3 are indefinite in that they are each drawn to the variant lipolytic enzyme of claim 1 comprising an amino acid sequence which is less than 95% identical to the amino acid sequence of SEQ ID NO:2 (i.e. 75%, 80%, 90% etc…). It is indefinite in that it is unclear and confusing how this is possible since the variant of claim 1 must comprise at least 95% identity to the amino acid sequence of SEQ ID NO:2. 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 2 and 3 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. Claims 2 and 3 are each drawn to the variant lipolytic enzyme of claim 1 comprising an amino acid sequence which is less than 95% identical to the amino acid sequence of SEQ ID NO:2 (i.e. 75%, 80%, 90% etc…)(see also above rejection under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph). Claims 2 and 3 thus do not further limit claim 1, drawn that variant which comprises at least 95% identity to SEQ ID NO:2. 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. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/process/file/efs/guidance/eTD-info-I.jsp. Claims 1-13, 15-17 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-16 of copending Application No. 18/571,886 (reference application).. Although the claims at issue are not identical, they are not patentably distinct from each other because claims 1-16 of copending Application No. 18/571,886 (reference application) drawn to a cleaning composition, comprising at least one variant lipolytic enzyme, wherein said variant lipolytic enzyme comprises an amino acid sequence having at least 70% identity to the full length amino acid sequence of SEQ ID NO:2, comprising the substitutions T064V-T117L-T177N/R-I178L-F180P-Y182A-R190L-S205G-S212D-F226L-Y239I-L249P-S252I-L258F, and further comprising at least one additional substitution selected from the group consisting of V014S, R040A/T, G059Y, G061D, A066D, S070E, Q161H, G175A/E, F207L/T, V210I, Q227H, A236P, S244E, E254Q, and R256K, wherein the positions are numbered by reference to the amino acid sequence of SEQ ID NO:2, and wherein the variant has polyesterase activity anticipate/make obvious instant claims 1-13, 15-17 drawn to variant lipolytic enzyme comprising an amino acid sequence having at least 70% identity to the full length amino acid sequence of SEQ ID NO: 2, comprising the substitutions T064V-T117L-T177N/R-I178L-F180P-Y182A-R190L- S205G-S212D-F226L-Y239I-L249P-S252I-L258F, and further comprising at least one additional substitution of RO40A/T, wherein the positions are numbered by reference to the amino acid sequence of SEQ ID NO: 2, and wherein the variant has esterase activity and methods of use of said variant lipolytic enzyme. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. Applicants have asked that this rejection be held in abeyance until appropriate to submit a terminal disclaimer. Claims 1-13, 15-17 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-19 of copending Application No. 18/571,882 (reference application).. Although the claims at issue are not identical, they are not patentably distinct from each other because claims 1-19 of copending Application No. 18/571,882 (reference application) drawn to a cleaning or fabric conditioning composition, comprising (a) at least one variant lipolytic enzyme, wherein said variant lipolytic enzyme comprises an amino acid sequence having at least 70% identity to the full length amino acid sequence of SEQ ID NO:2, comprising the substitutions T064V-T117L-T177N/R-I178L-F180P-Y182A-R190L- S205G-S212D-F226L-Y239I-L249P-S252I-L258F, and further comprising at least one additional substitution selected from the group consisting of V014S, R040A/T, G059Y, G061 D, A066D, S070E, Q161 H, G175A/E, F207L/T, V210I, Q227H, A236P, S244E, E254Q, and R256K, wherein the positions are numbered by reference to the amino acid sequence of SEQ ID NO:2, and wherein the variant has esterase activity; and (b) at least one additional ingredient selected from the group consisting of performance polymers, complexing agents, surfactants, and combinations thereof. anticipate/make obvious instant claims 1-13, 15-17 drawn to variant lipolytic enzyme comprising an amino acid sequence having at least 70% identity to the full length amino acid sequence of SEQ ID NO: 2, comprising the substitutions T064V-T117L-T177N/R-I178L-F180P-Y182A-R190L- S205G-S212D-F226L-Y239I-L249P-S252I-L258F, and further comprising at least one additional substitution of RO40A/T, wherein the positions are numbered by reference to the amino acid sequence of SEQ ID NO: 2, and wherein the variant has esterase activity and methods of use of said variant lipolytic enzyme. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. Applicants have asked that this rejection be held in abeyance until appropriate to submit a terminal disclaimer. Claims 1-13, 15-17 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-15 of copending Application No. 18/571,816 (reference application).. Although the claims at issue are not identical, they are not patentably distinct from each other because claims 1-15 of copending Application No. 18/571,816 (reference application) drawn to a cleaning composition comprising (a) a variant lipolytic enzyme, wherein said variant lipolytic enzyme comprises an amino acid sequence having at least 70% identity to the full length amino acid sequence of SEQ ID NO:2, comprising the substitutions T064V-T117L-T177N/R-I178L-F180P-Y182A-R190L-S205G- S212D-F226L-Y239I-L249P-S252I-L258F, and further comprising at least one additional substitution selected from the group consisting of V014S, R040A/T, G059Y, G061 D, A066D, S070E, Q161 H, G175A/E, F207L/T, V210I, Q227H, A236P, S244E, E254Q, and R256K, wherein the positions are numbered by reference to the amino acid sequence of SEQ ID NO:2, and wherein the variant has polyesterase activity; (b) at least one surfactant, preferably in an amount of 2 to 30 wt.%, more preferably 4 to 20 wt.%; (c) optionally at least one further enzyme, preferably in an amount of 0.001 to 1 wt.%, more preferably 0.005 to 0.5 wt.%; (d) optionally at least one performance polymer, preferably in an amount of 0.05 to 5 wt.%, more preferably 0.05 to 0.5 wt.%; and (e) optionally at least one organic solvent, preferably in an amount of 0.1 to 10 wt.%, more preferably 0.1 to 5 wt.% anticipate/make obvious instant claims 1-13, 15-17 drawn to variant lipolytic enzyme comprising an amino acid sequence having at least 70% identity to the full length amino acid sequence of SEQ ID NO: 2, comprising the substitutions T064V-T117L-T177N/R-I178L-F180P-Y182A-R190L- S205G-S212D-F226L-Y239I-L249P-S252I-L258F, and further comprising at least one additional substitution of RO40A/T, wherein the positions are numbered by reference to the amino acid sequence of SEQ ID NO: 2, and wherein the variant has esterase activity and methods of use of said variant lipolytic enzyme. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. Applicants have asked that this rejection be held in abeyance until appropriate to submit a terminal disclaimer. Closest Prior Art. WO 03/076580 teaches site saturation mutagenesis of Pseudomonas mendocina lipase (Example 1) leading to variants with improved hydrolytic activity on polyester in poly(ethyleneterephthalate) fibers as compared to the wild type enzyme of SEQ ID NO:2. WO 01/34899 teach assays of hydrolytic activity of P. mendocina lipase variants on long chain polyester polymer fibers or diethyl terephthalate; Examples 1A-C). Remarks No claim is allowed. Conclusion THIS ACTION IS MADE FINAL. 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 9/24/2026 /RICHARD G HUTSON/Primary Examiner, Art Unit 1652
Read full office action

Prosecution Timeline

Dec 13, 2023
Application Filed
May 28, 2026
Non-Final Rejection mailed — §112, §DP
Aug 05, 2026
Response Filed
Sep 29, 2026
Final Rejection mailed — §112, §DP (current)

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Prosecution Projections

3-4
Expected OA Rounds
65%
Grant Probability
99%
With Interview (+52.9%)
3y 6m (~7m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 909 resolved cases by this examiner. Grant probability derived from career allowance rate.

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