Prosecution Insights
Last updated: October 25, 2026

Mary Ann Calabrese, USPTO Patent Examiner

Listed by the USPTO as CALABRESE, MARY ANN

Tech Center 2900 • Art Units: 2913 2931 2938

This examiner grants 84% of resolved cases

Analysis

Mary Ann Calabrese has an allowance rate of 84.2% based on 1214 resolved cases in Tech Center 2900. In Art Unit 2913, the median days to allowance is 626, which indicates a very high likelihood of success and a fast prosecution timeline. These statistics are important for applicants to consider when evaluating the efficiency of obtaining a design patent in her docket.

The interview lift is 4.0%, suggesting that direct engagement with the examiner is associated with a small positive increase over the 84.2% base allowance rate. While the lift is modest, the high baseline suggests that most applications move toward a grant regardless of oral communication. Her top companies include Unifor S.p.A. and Juan Damaso Mayer Goyenechea Nieto.

The primary firms representing these applicants are FERGUSON CASE ORR PATERSON LLP and WESTMAN CHAMPLIN & KOEHLER, P.A. The 626-day median and 84.2% allowance rate provide a comprehensive view of the prosecution landscape in Tech Center 2900. Practitioners should use these metrics to manage client expectations for a swift and successful outcome in Art Unit 2913.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

84.2%
Allow Rate
+24.2% vs TC avg
1,217
Total Applications
+4.0%
Interview Lift
626
Avg Prosecution Days
Based on 1214 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
5.0%
§102 Novelty
4.5%
§103 Obviousness
78.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
35523490 Table Non-Final OA Unifor S.p.A.
35525278 Table Non-Final OA Juan Damaso Mayer Goyenechea Nieto

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Frequently Asked Questions

What is examiner Mary Ann Calabrese's allowance rate?

84.2% of resolved applications examined by Mary Ann Calabrese were allowed (1,214 resolved cases), compared with 94.4% across Art Unit 2913 over the last five years.

Does an interview help with examiner Mary Ann Calabrese?

This examiner's interview lift is +4.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Mary Ann Calabrese take to allow a patent?

Applications allowed by Mary Ann Calabrese took 626 days on average from filing to allowance.

Which art unit does examiner Mary Ann Calabrese work in?

Mary Ann Calabrese examines applications in Art Unit 2913 in Tech Center 2900.

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