Prosecution Insights
Last updated: October 25, 2026
Application No. 18/326,808

OSTOMY APPLIANCE

Non-Final OA §112
Filed
May 31, 2023
Priority
Oct 04, 2019 — GB 1914363.5 +7 more
Examiner
DEL PRIORE, ALESSANDRO R
Art Unit
3781
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
ConvaTec Limited
OA Round
2 (Non-Final)
62%
Grant Probability
Moderate
2-3
OA Rounds
1m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 62% of resolved cases
62%
Career Allowance Rate
129 granted / 208 resolved
-8.0% vs TC avg
Strong +44% interview lift
Without
With
+44.1%
Interview Lift
resolved cases with interview
Typical timeline
3y 6m
Avg Prosecution
23 currently pending
Career history
240
Total Applications
across all art units

Statute-Specific Performance

§101
2.9%
-37.1% vs TC avg
§103
51.9%
+11.9% vs TC avg
§102
15.8%
-24.2% vs TC avg
§112
22.3%
-17.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 208 resolved cases

Office Action

§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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 7/7/2026 has been entered. Claims 1-3, 5-10, 12-13, 15-17, 19-21, and 23 are pending with claims 1 and 8 being amended. Claims 4, 11, 14, 18, 22, and 24 are cancelled. Information Disclosure Statement The information disclosure statement (IDS) submitted on 7/7/2026 has been considered by the examiner. 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. Claim 9 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. The term “substantially triangular” in claim 9 is a relative term which renders the claim indefinite. The term “substantially” is not defined by the claim, the specification does not provide a standard for ascertaining the requisite degree, and one of ordinary skill in the art would not be reasonably apprised of the scope of the invention. Particularly in the context of describing a shape, the term “substantially” does not clearly set forth the degree to which a shape can deviate from “triangular” yet still be “substantially triangular”. Thus, the metes and bounds of the term appear relative and thus cannot be determined. Allowable Subject Matter Claims 1-3, 5-8, 10, 12-13, 15-17, 19-21, and 23 are allowed. Reasons for Allowance The following is an examiner’s statement of reasons for allowance: Reasons for allowance were indicated in the Notice of Allowance and Examiner’s Amendment mailed 4/7/2026, incorporated herein. In addition, Wiltshire (WO 2016/020686 A1), cited in Applicant’s IDS filed 7/7/2026, discloses a similar fixing mechanism using a slot. However, the operation of this feature of Wiltshire differs in that a combination would still not render Applicant’s invention obvious as disclosed in independent claims 1 and 8, previously set forth in the Examiner’s Amendment. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ALESSANDRO R DEL PRIORE whose telephone number is (571)272-9902. The examiner can normally be reached Monday - Friday, 8:00 - 5:30. 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, Rebecca E Eisenberg can be reached at (571) 270-5879. 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. /ALESSANDRO R DEL PRIORE/Examiner, Art Unit 3781 /GUY K TOWNSEND/Primary Examiner, Art Unit 3781
Read full office action

Prosecution Timeline

May 31, 2023
Application Filed
Oct 01, 2025
Non-Final Rejection mailed — §112
Dec 29, 2025
Response Filed
Mar 03, 2026
Examiner Interview (Telephonic)
Jul 07, 2026
Request for Continued Examination
Jul 16, 2026
Response after Non-Final Action
Oct 01, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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Patent 12752048
CANISTER STATUS DETERMINATION FOR NEGATIVE PRESSURE WOUND THERAPY DEVICES
3y 0m to grant Granted Oct 06, 2026
Patent 12734349
MEDICAL TREATMENT APPARATUS WITH OVERPRESSURE IN THE PORT
3y 5m to grant Granted Sep 15, 2026
Patent 12728035
SYSTEMS, METHODS, AND APPARATUS FOR TREATMENT OF GLAUCOMA
3y 10m to grant Granted Sep 08, 2026
Patent 12728030
HERNIA BELT OSTOMY SUPPORT SYSTEM
1y 5m to grant Granted Sep 08, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
62%
Grant Probability
99%
With Interview (+44.1%)
3y 6m (~1m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 208 resolved cases by this examiner. Grant probability derived from career allowance rate.

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