Prosecution Insights
Last updated: April 19, 2026
Application No. 18/546,003

6-METHYLURACIL DERIVATIVES WITH ANTICHOLINESTERASE ACTIVITY AND THEIR USE

Non-Final OA §101§112
Filed
Aug 10, 2023
Examiner
ENGLISH, CONNOR KENNEDY
Art Unit
1625
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Avva Pharmaceuticals Ltd.
OA Round
1 (Non-Final)
58%
Grant Probability
Moderate
1-2
OA Rounds
3y 7m
To Grant
99%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allow Rate
15 granted / 26 resolved
-2.3% vs TC avg
Strong +55% interview lift
Without
With
+55.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
49 currently pending
Career history
75
Total Applications
across all art units

Statute-Specific Performance

§101
3.8%
-36.2% vs TC avg
§103
36.6%
-3.4% vs TC avg
§102
13.0%
-27.0% vs TC avg
§112
30.0%
-10.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 26 resolved cases

Office Action

§101 §112
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 The instant application is a national stage entry of PCT/EP2022/052853, filed February 7, 2022, which claims priority to European Patent Application No. 21156802.7, filed February 12, 2021. Current Status of 18/546,003 This Office Action is responsive to the claims of 08/10/2023. Claims 1-5 have been examined on the merits. Information Disclosure Statement The information disclosure statement (IDS) submitted on 08/10/2023 is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. Specification The disclosure is objected to because of the following informalities: The scheme depicting the synthesis of the compounds of Formula (I) found on page 5 of the specification PNG media_image1.png 413 749 media_image1.png Greyscale lacks proper labeling and fails to depict structures corresponding to the claimed compounds. Critical heteroatoms and carbon atoms required by the claimed structures are missing from the illustrated intermediates. Accordingly, the figure does not describe a synthesis of the claimed compounds and cannot be relied upon as enabling disclosure. Appropriate correction is required. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(d): (d) REFERENCE IN DEPENDENT FORMS.—Subject to subsection (e), a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. The following is a quotation of pre-AIA 35 U.S.C. 112, fourth paragraph: Subject to the following paragraph [i.e., the fifth paragraph of pre-AIA 35 U.S.C. 112], a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. Claims 2 and 3 are rejected under 35 U.S.C. 112(d) or pre-AIA 35 U.S.C. 112, 4th paragraph, as being of improper dependent form for failing to further limit the subject matter of the claim upon which it depends, or for failing to include all the limitations of the claim upon which it depends. Claim 2 merely adds the intended use of treatment of Alzheimer’s disease to the compound of Formula (I), which does not impose a structural or functional limitation on the compound of claim 1. Claim 3 similarly does not impose any structural or functional limitations and only adds non-limiting intended use language. The intended use language of these claims does not carry patentable weight and therefore does not further limit the compound of claim 1. Applicant may cancel the claim(s), amend the claim(s) to place the claim(s) in proper dependent form, rewrite the claim(s) in independent form, or present a sufficient showing that the dependent claim(s) complies with the statutory requirements. 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. Claim 3 is 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. Claim 3 recites “use of a compound of Formula (I) according to claim 1 in the manufacture of for the treatment of Alzheimer’s disease,” but as written it is unclear what statutory category of invention is being claimed. It is ambiguous whether the claim is intended to recite a process of making a medicament, a pharmaceutical composition comprising the compound, a method of treating the disease, or some other form of use. Because the claim fails to distinctly point out and adequately define the subject matter regarded as the invention, the scope of the claim is indefinite. Claim Rejections - 35 USC § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title. Claim 3 is rejected under 35 U.S.C. 101 because the claimed invention is directed to non-statutory subject matter. The claim does not fall within at least one of the four categories of patent eligible subject matter because the claim is framed as a “use,” which is not itself a statutory class of invention under 35 U.S.C. §101. The language does not recite the steps of a process of making a medicament, nor does it define a composition, manufacture, or method of treatment. Instead, the claim merely expresses an intended use of the compound of claim 1 without actually claiming a statutory category of invention. Accordingly, claim 3 is non-statutory. Allowable Subject Matter Claims 1 and 4-5 are indicated as allowable because they contain subject matter that appears to be novel and nonobvious over the prior art of record. However, the application is not in condition for allowance due to the rejections of claims 2 and 3 and the objection to the specification. The following is the examiner’s state reasons for allowance of the indicated claims. The closest prior art is Semenov (Semenov, Vyacheslav E., et al. "6‐Methyluracil Derivatives as Bifunctional Acetylcholinesterase Inhibitors for the Treatment of Alzheimer's Disease." ChemMedChem 10.11 (2015): 1863-1874, found in IDS filed 08/10/2023). The reference discloses 6-methyluracil derivatives that are acetylcholinesterase inhibitors useful in the treatment of Alzheimer’s disease. The reference discloses compound 3d PNG media_image2.png 334 546 media_image2.png Greyscale (Table 1, pg. 1865), a free base form of the claimed compounds of formula (I) which are acetylcholinesterase inhibitors useful for the treatment of Alzheimer’s disease. Table 1 of the specification of the instant application directly compares compound 3d and shows that the claimed salts have greater AChE inhibiting activity and are less toxic compared to compound 3d. These properties are unexpected results that would not have been obvious to arrive at based on the teachings of Semenov. Semenov discloses quaternary nitrogen containing compounds PNG media_image3.png 267 494 media_image3.png Greyscale but expressly teaches away from their use because the compounds cannot cross the blood brain barrier (Figure 1, pg. 1864). Therefore, the currently claimed compounds and methods using these compounds novel and non-obvious in view of the prior art at the time of filing. Any inquiry concerning this communication or earlier communications from the examiner should be directed to CONNOR KENNEDY ENGLISH whose telephone number is (571)270-0813. The examiner can normally be reached Monday Friday, 8 a.m. 5 p.m. ET.. 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 at (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. /C.K.E./Examiner, Art Unit 1625 /Andrew D Kosar/Supervisory Patent Examiner, Art Unit 1625
Read full office action

Prosecution Timeline

Aug 10, 2023
Application Filed
Nov 18, 2025
Non-Final Rejection — §101, §112 (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
58%
Grant Probability
99%
With Interview (+55.0%)
3y 7m
Median Time to Grant
Low
PTA Risk
Based on 26 resolved cases by this examiner. Grant probability derived from career allow rate.

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