Prosecution Insights
Last updated: April 19, 2026
Application No. 18/574,167

CANNABIDIOLIC ACID ESTERS FOR TREATING PRADER-WILLI SYNDROME

Non-Final OA §102§103
Filed
Dec 26, 2023
Examiner
WARD, PAUL V
Art Unit
1622
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Yissum Research Development Company of the Hebrew University of Jerusalem Ltd.
OA Round
1 (Non-Final)
83%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
72%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allow Rate
1391 granted / 1672 resolved
+23.2% vs TC avg
Minimal -11% lift
Without
With
+-11.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
36 currently pending
Career history
1708
Total Applications
across all art units

Statute-Specific Performance

§101
2.1%
-37.9% vs TC avg
§103
19.1%
-20.9% vs TC avg
§102
19.4%
-20.6% vs TC avg
§112
43.7%
+3.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1672 resolved cases

Office Action

§102 §103
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 . DETAILED ACTION STATUS OF THE CLAIMS: Claims 43-62 are pending in this application. Claim Rejections - 35 USC § 102 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. Claims 43-62 (including claims dependent thereon) are rejected under 35 U.S.C. 102 as being anticipated by Zhou Xibing et al. (CN113087599, which corresponds to US Pub. 20230059087). Applicant claims a method for treating Prader Willi Syndrome (“PWS”) comprising the following: PNG media_image1.png 276 628 media_image1.png Greyscale wherein all the variables are defined in the claims. This reference discloses methods for treating PWS comprising the compounds of formula (I) in paragraphs [0033], [0211] and [0225]. (See Abstract and entire document). These methods read on the instant claim. Since this reference teaches the exact methods, Applicant’s claims are anticipated, and thus, rejected under 35 U.S.C. 102. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103(a) which forms the basis for all obviousness rejections set forth in this Office action: (a) A patent may not be obtained though the invention is not identically disclosed or described as set forth in section 102 of this title, if the differences between the subject matter sought to be patented and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art to which said subject matter pertains. Patentability shall not be negatived by the manner in which the invention was made. Claims 43-62 are rejected under 35 U.S.C. 103(a) as being unpatentable over Zhou Xibing et al. (CN113087599, which corresponds to US Pub. 20230059087). Applicants claim a generic group of cannbidiolic acid ester compounds for treating PWS with the compounds of the following formula (I): PNG media_image2.png 136 176 media_image2.png Greyscale wherein: PNG media_image3.png 142 544 media_image3.png Greyscale Zhou discloses compounds of formula (I) and a generic group of cannabidiolic acid and ester compounds and compositions with a therapeutic utility for treating PWS, which embraces Applicant’s formula I and claimed compounds. (See Abstract and compounds). Zhou does not teach treating PWS with compounds of formula (I) wherein R1 contains various C2-C15 alkyl, C2-C15 alkenyl and C2-C15alkynyl. Thus, Applicant claims differ from the reference by reciting specific species and a more limited genus than the reference by replacing methyl or ethyl of R1 with various C2-C15 alkyl, C2-C15 alkenyl and C2-C15alkynyl. It would have been obvious to one having ordinary skill in the art at the time of the invention to replace the R1 substituent of formula (I) or add various substituents to formula (I) as taught by the reference, because it is generally known to a person skilled in the art that it would easily obtain other cannabidiolic acid and ester compounds having excellent performance for treating PWS through the substitution or changing the R1 substituent with conventional alkyls, alkenyls or alkynyls groups. One of ordinary skill in the art would have been motivated to select the claimed compounds replacing R1 with various alkyls, alkenyls or alkynyls since such compounds would have been suggested by the reference as a whole for treating PWS. All the moieties are taught in the art. Further, a prior art disclosed genus of useful compounds is sufficient to render prima facie obvious a species falling within a genus. Thus, Applicant’s claims are obvious, and therefore, rejected under 35 U.S.C. 103. Claims 43-62 are rejected under 35 U.S.C. 103 as being unpatentable over Webb et al. (WO202113722) in view of Zhou Xibing et al. (CN113087599, which corresponds to US Pub. 20230059087). Applicant claims a method for treating Prader Willi Syndrome (“PWS”) comprising the following: PNG media_image1.png 276 628 media_image1.png Greyscale wherein all the variables are defined in the claims. Additionally, in dependent claims 45-62, Applicant claims the following: PNG media_image4.png 162 654 media_image4.png Greyscale PNG media_image5.png 798 644 media_image5.png Greyscale PNG media_image6.png 278 642 media_image6.png Greyscale Webb discloses various cannabidiolic acid ester compounds represented by formula (I) with various formulations and administrations to treat genetic disorders (e.g., muscular dystrophy or “MD”) caused by a variety of mutations in structural proteins that result in progressive degeneration and weakness of muscle due to muscle damage, inflammation or deposition of adipose and fibrotic tissues. (See pages 1 and 4, line 10 to page 6). Webb does not explicitly disclose a method for treating the genetic disorder PWS with cannabidiolic acid ester compounds of formula (I). Zhou discloses cannabidiolic acid ester compounds according to formula (I) to treat PWS, a genetic disorder caused by loss of function of specific genes on chromosome15, resulting in muscle weakness. It would have been obvious to one having ordinary skill in the art at the time of the invention to combine the method of Webb with the method taught by Zhou for providing an alternative method for treating the PWS genetic disorder. Webb discloses various formulations and administration of cannabidiolic acid ester compounds of formula (I) to treat genetic disorders such as MD which causes muscle weakness due to muscle damage, inflammation or deposition of adipose and fibrotic tissues, and Zhou discloses methods for treating the PWS genetic disorder with symptoms of muscle weakness with cannabidiolic acid ester compounds of formula (I). All of the moieties are taught in the art. Therefore, one of ordinary skill in the art, confronted with an alternative method for treating PWS, genetic disorder associated with muscle weakness, would combine the method of Webb and Zhou to generate a therapeutic effect for treating PWS and muscle weakness. See In re Payne, 203 USPQ 245(CCPA 1979). Since Applicant’s claims are prima facie obvious in view of the teachings of Webb and Zhou, Applicant’s claims are obvious, and therefore, rejected under 35 U.S.C. 103. Conclusion Claims 43-62 are pending. Claims 43-62 are rejected. No claims are allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to PAUL V WARD whose telephone number is (571)272-2909. The examiner can normally be reached M-F 9am to 5pm. 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, James Alstrum-Acevedo can be reached at 571-272-5548. 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. /PAUL V WARD/ Primary Examiner, Art Unit 1622
Read full office action

Prosecution Timeline

Dec 26, 2023
Application Filed
Feb 20, 2026
Non-Final Rejection — §102, §103 (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
83%
Grant Probability
72%
With Interview (-11.0%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 1672 resolved cases by this examiner. Grant probability derived from career allow rate.

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