Prosecution Insights
Last updated: April 19, 2026
Application No. 18/137,760

CANNABINOID CONJUGATE MOLECULES

Final Rejection §112
Filed
Apr 21, 2023
Examiner
CHANDRAKUMAR, NIZAL S
Art Unit
1625
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Akos Biosciences, Inc.
OA Round
4 (Final)
73%
Grant Probability
Favorable
5-6
OA Rounds
2y 4m
To Grant
91%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allow Rate
1273 granted / 1752 resolved
+12.7% vs TC avg
Strong +18% interview lift
Without
With
+17.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
76 currently pending
Career history
1828
Total Applications
across all art units

Statute-Specific Performance

§101
1.1%
-38.9% vs TC avg
§103
30.0%
-10.0% vs TC avg
§102
12.0%
-28.0% vs TC avg
§112
35.3%
-4.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1752 resolved cases

Office Action

§112
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 . Amended claims 1-8, 22-24 and new independent claim 25 are pending. 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. Previously presented rejection of claims 1-8, 22, 23-25 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 is maintained for reasons of record. Applicants arguments and the Affidavit were considered. According to Applicant, the term PNG media_image1.png 20 122 media_image1.png Greyscale defines the structure of the starting material compound. Further Applicant points to Examples of PNG media_image1.png 20 122 media_image1.png Greyscale in the specification. Page 5-8. That one of skill in the art would understand what the functional term PNG media_image2.png 16 114 media_image2.png Greyscale means was explicitly acknowledged in the previous action, bottom of page 3.. As to referring to specification at page 5-6 for the starting material PNG media_image1.png 20 122 media_image1.png Greyscale , Examiner notes that Examples are not explicit definition Further, consider one of the Applicant cited examples of PNG media_image2.png 16 114 media_image2.png Greyscale at page 8, the first structure. As pointed out by the Examiner in previous action at page 4, line 7, one of skill in the art would at once recognize that there is no functionality in nabumetone molecular structure that could be reacted with N-protected amino alkyl chloroformate as required for the first step in the claimed method. That is, the first step in the claimed method raises issues because of lack of explicit structural information for the starting material reactant defined as PNG media_image2.png 16 114 media_image2.png Greyscale . Applicant response to this issue is found at page 7/17 of the Affidavit, according to which FIG H, teaches how to ‘create’ the PNG media_image3.png 44 626 media_image3.png Greyscale Invoking starting materials and intermediates ‘created’ by such chemical and biochemical methods (metabolites and prodrugs) as argued at Applicant Remarks 07/16/2025 bottom of page 8, suitable for the claimed method would be inconsistent with the 112-2 requirement of ‘particularly pointing out and distinctly claiming the subject’. Applicant also speculates on chemistry possibilities (see page 14/17) to make the intermediates necessary for the claimed method. The argument that Examiner need to ignore claim language and limitation is against Examination guidelines on claim interpretation. Consider for example, the reaction of meloxicam at FIG.1C with the N-protected alkyl chloroformate. No reagent is even speculated here or in any working example to support why one of skill in the art would anticipate that the reaction would occur at NH and not at OH in meloxicam. At the minimum Applicant could point out, for example prior art citations for regiospecific acylation reaction of meloxicam. The missing elements (missing steps) and open-ended comprising language pointed out in the previous actions (plural), directly relate to the applicants argument that Examiner need to import any explicit or implicit subject matter from the specification to interpret claim. Pointing out steps for ‘creating’ necessary intermediates buried in the specification would not be persuasive for this Examiner. See previous action, page 5 Van Genus and Zietz citations. Similarly, with respect to absence of other process parameters pointed out in the previous action such as reagents, terms such intermediates, cannabinoid etc., Applicant turns to examples (not working examples) in the specification. Again, Examples are not explicit definitions. As to claim 24 pointed out by the Examiner as lacking antecedent basis because compound IV-b has non-cannabinoid (right hand portion) in the pictured structure, Applicant points to the Affidavit. PNG media_image4.png 74 636 media_image4.png Greyscale While it is known that cannabigerol is a cannabinoid, cannabigerol has two phenolic OH groups. As such paragraphs 68-71 implies the need for derivatization of cannabigerol to ‘create’ starting materials and intermediates needed for the claimed method. Such language here in the affidavit, ‘derivative’, ‘would be’ ‘could be’ are indefinite and do not help with defining the metes and bounds of the claims. For example, the term ‘derivative’ implies more than what are positively recited (in claims). Similarly, language at paragraph 39 with regards to lumiracoxib and meloxicam is at best confusing, not only because meloxicam does not have an amino group, but also it is unclear what part of lumiracoxib (the NH or carboxylic acid) reacts with N-protected amino alkyl chloroformate. It is interesting to note that the while many of the cox-2 inhibitors (see claim 25 and also see Zarghi teaching of record) are carboxylic acids, the disclosure in the specification is limited to one working example, conjugation of celecoxib, a sulfonamide cox-2 inhibitor, for which a patent has been issued. New claim 25 recites the specific starting materials for cox-inhibitors and cannabinoids for otherwise same method of claim 1. For reasons explained here and in rejections of record for claim 1, clarity with regards to these starting materials and intermediates of claimed method of claim 25 is also vague and indefinite. For suggestion see Office action 04/25/2025 bottom of page 4, and top of page 5: 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 NIZAL S CHANDRAKUMAR whose telephone number is (571)272-6202. The examiner can normally be reached M-F 8-5 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, Andrew Kosar can be reached on (571) 272-0913. 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. /NIZAL S CHANDRAKUMAR/Primary Examiner, Art Unit 1625
Read full office action

Prosecution Timeline

Apr 21, 2023
Application Filed
Dec 22, 2024
Non-Final Rejection — §112
Apr 15, 2025
Response Filed
Apr 22, 2025
Final Rejection — §112
Jul 16, 2025
Request for Continued Examination
Jul 21, 2025
Response after Non-Final Action
Jul 21, 2025
Interview Requested
Jul 28, 2025
Non-Final Rejection — §112
Nov 29, 2025
Response Filed
Nov 29, 2025
Response after Non-Final Action
Jan 14, 2026
Final Rejection — §112
Mar 09, 2026
Interview Requested

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

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Prosecution Projections

5-6
Expected OA Rounds
73%
Grant Probability
91%
With Interview (+17.9%)
2y 4m
Median Time to Grant
High
PTA Risk
Based on 1752 resolved cases by this examiner. Grant probability derived from career allow rate.

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