Prosecution Insights
Last updated: April 19, 2026
Application No. 18/483,622

BIOSYNTHETIC PRODUCTION OF STEVIOL GLYCOSIDES

Non-Final OA §102
Filed
Oct 10, 2023
Examiner
MCINTOSH III, TRAVISS C
Art Unit
1693
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Conagen Inc.
OA Round
1 (Non-Final)
73%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
87%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allow Rate
960 granted / 1312 resolved
+13.2% vs TC avg
Moderate +14% lift
Without
With
+13.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
28 currently pending
Career history
1340
Total Applications
across all art units

Statute-Specific Performance

§101
3.5%
-36.5% vs TC avg
§103
14.8%
-25.2% vs TC avg
§102
24.3%
-15.7% vs TC avg
§112
31.3%
-8.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1312 resolved cases

Office Action

§102
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 . Claim Objections Claim 18 is objected to because of the following informalities: the claim fails to end in a period. Appropriate correction is required. Drawings The drawings are objected to because figure 1 is not legible. The structures of the compounds set forth in figure 1 are not legible. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Information Disclosure Statement The listing of references in the specification is not a proper information disclosure statement. 37 CFR 1.98(b) requires a list of all patents, publications, or other information submitted for consideration by the Office, and MPEP § 609.04(a) states, "the list may not be incorporated into the specification but must be submitted in a separate paper." Therefore, unless the references have been cited by the examiner on form PTO-892, they have not been considered. 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. Claim(s) 56 and 58 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by US2021/0002318. ‘318 discloses the compound: PNG media_image1.png 558 720 media_image1.png Greyscale in figure 1n and synthesis methods in figure 4j and 5n which would anticipate the compound named R7-5 herein having the structure: PNG media_image2.png 322 328 media_image2.png Greyscale . ‘318 also provides the compound 1n can be used in various compositions as a sweetening compound, such as in vodka, wine, beer liquor, etc. – thus meeting the limitations of claim 58 (see [0672 for example). Claim(s) 18 is rejected under 35 U.S.C. 102(a)(1) as being anticipated by US 2014/0357588. ‘588 discloses a method of making reb M2 comprising contacting reb D2 with an enzyme capable of transforming D2 to M2, UDP-glucose, and optionally UDP-glucose recycling enzymes to produce reb M2 (see [0209]). The enzyme capable of transforming reb D2 to reb M2 is taught to be a UDP-glucosyltransferase (see [0217]). It is noted that the reb D2 of ‘588 has the structure: PNG media_image3.png 222 256 media_image3.png Greyscale (see [0176]) which is the same as R5-1 herein: PNG media_image4.png 306 368 media_image4.png Greyscale . Likewise, reb M2 has the structure: PNG media_image5.png 252 240 media_image5.png Greyscale (see [0201] and is the same as R6-5 herein having the structure: PNG media_image6.png 346 328 media_image6.png Greyscale . As such, ‘588 teaches methods of making reb R6-5 comprising preparing a reaction mixture of reb R5-1, UDP-glucose, and a UDP-glucosyltransferase and incubating the mixture to produce reb R6-5, anticipating present claim 18. Allowable Subject Matter Claims 1-17 are allowed. The closest prior art is seen to be US 2014/0357588 who discloses methods of synthesizing various rebaudiosides with sugar substrates and UDP-glycosyltransferase enzymes but fails to disclose the present methods of making compounds having formula R6-6 where sugar VI is attached to the 3’-position of sugar I. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to TRAVISS C MCINTOSH III whose telephone number is (571)272-0657. The examiner can normally be reached Monday-Friday 9AM-5:30PM EST. 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, Scarlett Goon can be reached at 571-270-5241. 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. TRAVISS C. MCINTOSH III Primary Examiner Art Unit 1693 /TRAVISS C MCINTOSH III/Primary Examiner, Art Unit 1693
Read full office action

Prosecution Timeline

Oct 10, 2023
Application Filed
Feb 07, 2026
Non-Final Rejection — §102 (current)

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

1-2
Expected OA Rounds
73%
Grant Probability
87%
With Interview (+13.9%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 1312 resolved cases by this examiner. Grant probability derived from career allow rate.

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