Prosecution Insights
Last updated: April 19, 2026
Application No. 18/537,897

BACTERIA ENGINEERED TO TREAT A DISEASE OR DISORDER

Non-Final OA §DP
Filed
Dec 13, 2023
Examiner
BURKHART, MICHAEL D
Art Unit
1638
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Synlogic Operating Company, Inc.
OA Round
1 (Non-Final)
62%
Grant Probability
Moderate
1-2
OA Rounds
3y 3m
To Grant
72%
With Interview

Examiner Intelligence

Grants 62% of resolved cases
62%
Career Allow Rate
507 granted / 811 resolved
+2.5% vs TC avg
Moderate +10% lift
Without
With
+9.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
45 currently pending
Career history
856
Total Applications
across all art units

Statute-Specific Performance

§101
3.8%
-36.2% vs TC avg
§103
27.5%
-12.5% vs TC avg
§102
21.0%
-19.0% vs TC avg
§112
25.2%
-14.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 811 resolved cases

Office Action

§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 . Priority Applicant’s claim for the benefit of a prior-filed application under 35 U.S.C. 119(e) or under 35 U.S.C. 120, 121, 365(c), or 386(c) is acknowledged. Applicant has not complied with one or more conditions for receiving the benefit of an earlier filing date under 35 U.S.C. 120 as follows: The later-filed application must be an application for a patent for an invention which is also disclosed in the prior application (the parent or original nonprovisional application or provisional application). The disclosure of the invention in the parent application and in the later-filed application must be sufficient to comply with the requirements of 35 U.S.C. 112(a) or the first paragraph of pre-AIA 35 U.S.C. 112, except for the best mode requirement. See Transco Products, Inc. v. Performance Contracting, Inc., 38 F.3d 551, 32 USPQ2d 1077 (Fed. Cir. 1994) The disclosure of the prior-filed application, Application No and 14/960,333 fails to provide adequate support or enablement in the manner provided by 35 U.S.C. 112(a) or pre-AIA 35 U.S.C. 112, first paragraph for one or more claims of this application. The instant claims recite broad genera of potential bacteria comprising any phenylalanine transporter and genes that metabolize phenylalanine. The ‘333 application discloses only ammonia transporters and metabolism of ammonia into, e.g. arginine. The 15/154,934 application specifically discloses phenylalanine transporters and genes for the metabolism of phenylalanine, therefore the instant claims are granted a priority date of 5/13/2016, the filing date of that application. 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. Claims 24-40 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-18, 22 of U.S. Patent No. 10,933,102. Although the claims at issue are not identical, they are not patentably distinct from each other because the ‘102 claims recite bacteria used by the instant method that comprise a heterologous phenylalanine transporter and a heterologous gene that metabolizes phenylalanine under control of an inducible promoter(s). The inducible promoter may be induced by environmental conditions, such as those in the gut or a tumor. The heterologous genes may be on a chromosome or a plasmid. The bacterium may be probiotic, such as E. Coli Nissle. The bacteria may be auxotrophic in genes in the human gut or in the diaminopimelic pathway. Claims 24-28, 30-35, 39-40 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-8, 11, 13 of U.S. Patent No. 9,943,555. Although the claims at issue are not identical, they are not patentably distinct from each other because the ‘555 claims recite bacteria used by the instant method that comprise a heterologous phenylalanine transporter and a heterologous gene that metabolizes phenylalanine (PAL) under control of an inducible promoter(s). The inducible promoter may be induced by environmental conditions, such as those in the gut (low oxygen). The heterologous genes may be on a chromosome or a plasmid. The bacteria may be auxotrophic in genes in the human gut such as the diaminopimelic pathway. Claims 24-28, 30-32, 35 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-4, 7,8 of U.S. Patent No. 10,610,546. Although the claims at issue are not identical, they are not patentably distinct from each other because the ‘546 claims recite bacteria used by the instant method that comprise a heterologous phenylalanine transporter and a heterologous gene that metabolizes phenylalanine (PAL) under control of an inducible promoter(s). The inducible promoter may be induced by those in the gut (low oxygen, anaerobic). The heterologous genes may be on a chromosome. Claims 24-28, 30-36, 39, 40 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-4, 6-9, 12-15 of U.S. Patent No. 10,195,234. Although the claims at issue are not identical, they are not patentably distinct from each other because the ‘234 claims recite bacteria used by the instant method that comprise a heterologous phenylalanine transporter and a heterologous gene that metabolizes phenylalanine (PAL) under control of an inducible promoter(s). The inducible promoter may be induced by those in the gut (low oxygen, anaerobic). The heterologous genes may be on a chromosome or a plasmid. The bacteria may be probiotic and auxotrophic in genes in the human gut such as the diaminopimelic pathway. Conclusion No claim is allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Michael Burkhart whose telephone number is (571)272-2915. The examiner can normally be reached M-F 8-5. 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, Tracy Vivlemore can be reached at 571 272-2914. 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. /MICHAEL D BURKHART/Primary Examiner, Art Unit 1638
Read full office action

Prosecution Timeline

Dec 13, 2023
Application Filed
Mar 07, 2026
Non-Final Rejection — §DP (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
62%
Grant Probability
72%
With Interview (+9.9%)
3y 3m
Median Time to Grant
Low
PTA Risk
Based on 811 resolved cases by this examiner. Grant probability derived from career allow rate.

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