Prosecution Insights
Last updated: April 19, 2026
Application No. 17/767,425

MONO-HYDROXY OR DI-HYDROXY DERIVATIVES OF POLYUNSATURATED FATTY ACIDS, PRODUCTION METHOD THEREFOR, AND USE THEREOF

Non-Final OA §102§DP
Filed
Apr 07, 2022
Examiner
LOUNTOS, GEORGE THEMISTOCLIS
Art Unit
1652
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Korea Research Institute Of Bioscience And Biotechnology
OA Round
1 (Non-Final)
0%
Grant Probability
At Risk
1-2
OA Rounds
3y 2m
To Grant
0%
With Interview

Examiner Intelligence

Grants only 0% of cases
0%
Career Allow Rate
0 granted / 1 resolved
-60.0% vs TC avg
Minimal +0% lift
Without
With
+0.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
13 currently pending
Career history
14
Total Applications
across all art units

Statute-Specific Performance

§101
2.9%
-37.1% vs TC avg
§103
25.7%
-14.3% vs TC avg
§102
30.0%
-10.0% vs TC avg
§112
34.3%
-5.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1 resolved cases

Office Action

§102 §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 . Claims Status Claims 1-2, 7-10, 13-14, and 16-22 are pending. Claims 3-6, 11-12, 15, and 23-27 are canceled. Election/Restrictions Applicant’s election without traverse of claims 1 and 2 in the reply filed on November 14, 2025 is acknowledged. Claims 7-10, 13-14, and 16-22 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected subject matter, there being no allowable generic or linking claim. 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1 and 2 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by UniProt sequence (Database entry ID: K9TJJ9_9CYAN; release 2013_03/2013_03; 06-Mar-2013) hereinafter referred to as R1 as evidenced by Woo et al. (KR101971481B1; published April 23, 2019). R1 teaches a lipoxygenase (Oscillatoria acuminata PCC 6304) that shares 100% sequence identity with SEQ ID NO: 1 of claim 1. Given that the sequence of the lipoxygenase (Oscillatoria acuminata PCC 6304) is identical with SEQ ID NO: 1, it would be inherent for both to share the same biochemical and substrate activity for docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) as evidenced by Woo et al. who teach a lipoxygenase (Volvox carteri) that processes docosahexaenoic acid into a di-hydroxy derivative of DHA (Paragraph 0008, pg. 4 of the translated patent application publication). Therefore, claims 1 and 2 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by UniProt sequence (Database entry ID: K9TJJ9_9CYAN; release 2013_03/2013_03; 06-Mar-2013) hereinafter referred to as R1 as evidenced by Woo et al. (KR101971481B1; published April 23, 2019). Claims 1 and 2 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by UniProt sequence (Database entry ID: K9VMV7_9CYAN; release 2013_03/2013_03; 06-Mar-2013) hereinafter referred to as R2 as evidenced by Woo et al. (KR101971481B1; published April 23, 2019). R2 teaches an arachidonate 15-lipoxygenase (Oscillatoria nigro-viridis PCC 7112) that shares 100% sequence identity with SEQ ID NO: 2 of claim 1. Given that the sequence of the arachidonate 15-lipoxygenase (Oscillatoria nigro-viridis PCC 7112) is identical with SEQ ID NO: 2, it would be inherent for both to share the same biochemical and substrate activity for docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) as evidenced by Woo et al. who teach a lipoxygenase (Volvox carteri) that processes docosahexaenoic acid into a di-hydroxy derivative of DHA (Paragraph 0008, pg. 4 of the translated patent application publication). Therefore, claim 1 is rejected under 35 U.S.C. 102(a1) as being anticipated by UniProt sequence (Database entry ID: K9VMV7_9CYAN; release 2013_03/2013_03; 06-Mar-2013) as evidenced by Woo et al. (KR101971481B1; published April 23, 2019). 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 filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual 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/apply/applying-online/eterminal-disclaimer. Claim 1 is rejected on the ground of nonstatutory double patenting as being unpatentable over claim 1 of U.S. Patent No. 12291736B2 to Seo et al., hereinafter referred to as ‘736. Although the claims at issue are not identical, they are not patentably distinct from each other because: Pending claim 1 is drawn to an enzyme for producing mono- or di-hydroxy derivatives of polyunsaturated fatty acids having an amino acid sequence having at least 90% homology with an amino acid sequence represented by SEQ ID NO: 1 or 2. Patented claim 1 of ‘736 is drawn to an enzyme for producing di-hydroxy derivatives of polyunsaturated fatty acids, having the amino acid sequence of SEQ ID NO: 1 (the sequence of SEQ ID NO: 1 shares 99.9% sequence identity with SEQ ID NO: 2 of instant pending claim 1). Thus, a comparison of claim 1 of ‘736 and instant pending claim 1 shows that the ‘736 claim 1 is encompassed by and anticipates instant pending claim 1. Claim 2 is rejected on the ground of nonstatutory double patenting as being unpatentable over claim 2 of U.S. Patent No. 12291736B2 to Seo et al. hereinafter referred to as ‘736. Although the claims at issue are not identical, they are not patentably distinct from each other because: Pending claim 2 is drawn to the enzyme of instant pending claim 1, wherein the polyunsaturated fatty acid is docosahexaenoic acid (DHA) or eicosapentaenoic acid (EPA). Patented claim 2 of ‘736 is drawn to the enzyme (of claim 1) for producing the di-hydroxy derivatives of polyunsaturated fatty acids of the enzyme for producing the di-hydroxy derivatives of polyunsaturated fatty acids of wherein a substrate of the enzyme is docosahexaenoic acid (DHA) or eicosapentaenoic acid (EPA). Thus, a comparison of claim 2 of ‘736 and instant pending claim 2 shows that the ‘736 claim 2 is encompassed by and anticipates instant pending claim 2. Claims 1 and 2 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claim 2 of copending Application No. 19/080,532 (Seo et al.). hereinafter referred to as ‘532. Although the claims at issue are not identical, they are not patentably distinct from each other because: Pending claim 1 is drawn to an enzyme for producing mono- or di-hydroxy derivatives of polyunsaturated fatty acids having an amino acid sequence having at least 90% homology with an amino acid sequence represented by SEQ ID NO: 1 or 2. Pending claim 2 is drawn to the enzyme of pending claim 1, wherein the polyunsaturated fatty acid is docosahexaenoic acid (DHA) or eicosapentaenoic acid (EPA). Copending claim 2 of ‘532 is drawn to a method for producing the compound of claim 1, comprising reacting the enzyme having the amino acid sequence of SEQ ID NO: 1 with docosahexaenoic acid (DHA). The amino acid sequence of SEQ ID NO:1 shares 99.9% sequence identity with SEQ ID NO: 2 of instant pending claim 1. Thus, a comparison of claim 2 of copending ‘532 and instant pending claims 1 and 2 shows that the copending ‘532 claim 2 is encompassed by and anticipates instant pending claims 1 and 2. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. Conclusion No claims are allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to GEORGE T LOUNTOS whose telephone number is (571)272-0502. The examiner can normally be reached Monday-Friday 8:00 am - 5:00 pm. 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. /G.T.L./Examiner, Art Unit 1652 /RICHARD G HUTSON/Primary Examiner, Art Unit 1652
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Prosecution Timeline

Apr 07, 2022
Application Filed
Nov 01, 2025
Response after Non-Final Action
Jan 07, 2026
Non-Final Rejection — §102, §DP (current)

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Prosecution Projections

1-2
Expected OA Rounds
0%
Grant Probability
0%
With Interview (+0.0%)
3y 2m
Median Time to Grant
Low
PTA Risk
Based on 1 resolved cases by this examiner. Grant probability derived from career allow rate.

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