Prosecution Insights
Last updated: July 17, 2026
Application No. 18/521,144

PYRIDIUM ESTERS

Non-Final OA §112
Filed
Nov 28, 2023
Priority
Nov 28, 2022 — EU 22209905.3
Examiner
SHAMEEM, GOLAM M
Art Unit
1621
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
The Procter & Gamble Company
OA Round
1 (Non-Final)
87%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 87% — above average
87%
Career Allowance Rate
771 granted / 889 resolved
+26.7% vs TC avg
Strong +16% interview lift
Without
With
+15.8%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 10m
Avg Prosecution
42 currently pending
Career history
904
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
3.1%
-36.9% vs TC avg
§102
6.7%
-33.3% vs TC avg
§112
13.8%
-26.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 889 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 . DETAILED ACTION Priority This application claims benefit for foreign priority under 35 U.S.C. § 119(a)-(d) to PNG media_image1.png 18 164 media_image1.png Greyscale , is acknowledged. Status of Claims Claims 1-20 are currently pending in the application. Receipt is acknowledged of amendment / response filed on April 13, 2026 and that has been entered. Information Disclosure Statement Receipt is acknowledged of Information Disclosure Statement (IDS), filed on 06/19/2024, which has been entered in the file. Response to Election/Restriction In response to the restriction requirement, Applicants have elected Group II, which includes claims 4-13 drawn to an antimicrobial composition comprising a compound of Formula I thereof, without traverse, is acknowledged. Claims 1-3 and 14-20 are withdrawn from further consideration pursuant to 37 C.F.R. 1.142 (b) as being drawn to a non-elected subject matter. Therefore, the requirement for restriction is still deemed proper and made it final. Applicants preserve their right to file a divisional on the non-elected subject matter. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 4-13 are rejected under 35 U.S.C. § 112, first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter, which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor(s), at the time the application was filed, had possession of the claimed invention. The expression “pyridinium ester” [claim 4, line 5, page 3, and all other occurrences of claims 4-13, if any and claim 5, line 7, page 3] is extremely broad because it is not clear what kind of ‘pyridinium ester’ the Applicant is intending to encompass with this broad expression [since any ‘pyridinium ester’ may fall within the broad definition of this ‘ester’ compound]. The above expression, which is not described in such a way as to satisfy the statutory requirements within the purview of 35 U.S.C. 112 first paragraph because, the specification does not provide essential description to carry out the invention and thus lacks enablement as well. Therefore, it is suggested that the expression ‘pyridinium ester’ either be limited to the specific ‘pyridinium ester’ that actually contemplated in the specification (such as, incorporating the chemical formula of ‘pyridinium ester’, elected species, recited in claim 3) PNG media_image2.png 190 292 media_image2.png Greyscale into claims 4 and 5) and/or to amend the claims within the context and scope of the claims in order to overcome the rejection. 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. Claims 6 and 8 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 pre-AIA the applicant regards as the invention. The expression “preferably” (claim 6, line 4, page 3, and all other occurrences, if any) and “preferably” (claim 8, line 2, page 4, and all other occurrences, if any) are indefinite, because a broad range or limitation together with a narrow range or limitation that falls within the broad range or limitation (in the same claim) is considered indefinite, since the resulting claims do not clearly set forth the metes and bounds of the patent protection desired. Note the explanation given by the Board of Patent Appeals and Interferences in Ex parte Wu, 10 USPQ2d 2031, 2033 (Bd. Pat. App. & Inter. 1989), as to where broad language is followed by "such as" and then narrow language. The Board stated that this can render a claim indefinite by raising a question or doubt as to whether the feature introduced by such language is (a) merely exemplary of the remainder of the claim, and therefore not required, or (b) a required feature of the claim. Note also, for example, the decisions of Ex parte Steigewald, 131 USPQ 74 (Bd. App. 1961); Ex parte Hall, 83 USPQ 38 (Bd. App. 1948); and Ex parte Hasche, 86 USPQ 481 (Bd. App. 1949). Further, the expression “preferably” renders the claims indefinite because it is unclear whether the limitation following the phrase is part of the claimed invention. See MPEP § 2173.05 (d). The use of expression “preferably” in the middle of the claim also may lead to confusion over the intended scope of the claim. This rejection can be overcome be deleting the expression or to amend the claims within the context and scope of the claims in order to overcome the rejection. Objections Claims 4-5 are also objected to as being dependent upon a withdrawn /non-elected base claim 1, but should be rewritten in independent form including all of the limitations of the base claim and any intervening claims. Telephone Inquiry Any inquiry concerning this communication or earlier communications from the examiner should be directed to Golam Shameem, Ph.D. whose telephone number is (571) 272-0706. The examiner can normally be reached on Monday-Thursday from 7:30 AM - 6:00 PM. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Clinton Brooks, Ph.D. can be reached at (571) 270-7682. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://portal.uspto.gov/external/portal. Should you have questions about access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). Any inquiry of a general nature or relating to the status of this application should be directed to the Group receptionist, whose telephone number is (571) 272-1600. /GOLAM M SHAMEEM/Primary Examiner, Art Unit 1621
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Prosecution Timeline

Nov 28, 2023
Application Filed
Jun 03, 2026
Non-Final Rejection mailed — §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
87%
Grant Probability
99%
With Interview (+15.8%)
1y 10m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 889 resolved cases by this examiner. Grant probability derived from career allowance rate.

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