Prosecution Insights
Last updated: October 08, 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 84.2% allowance rate in Tech Center 2900 and Art Unit 2913. With 1213 resolved cases, the median days to allowance is 626. The interview lift is 4.0%, suggesting that interviews provide a consistent, though modest, increase in the probability of an allowance compared to the 84.2% baseline for applications reaching a resolution.

Top companies like Unifor S.p.A. and Juan Damaso Mayer Goyenechea Nieto are frequently prosecuted before this examiner. These entities are often represented by firms such as FERGUSON CASE ORR PATERSON LLP and WESTMAN CHAMPLIN & KOEHLER, P.A. The 4.0% interview lift is a factor for these firms to consider when navigating the 626-day median timeline.

With 1213 resolved cases, the examiner's 84.2% allowance rate provides a strong foundation for applicants in Art Unit 2913. The 4.0% interview lift offers a tactical advantage for overcoming rejections. Practitioners should consider the 626-day median to allowance when planning their prosecution strategy in Tech Center 2900. This combination of metrics supports a proactive approach to securing patent grants.

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 1213 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 (1,213 resolved cases), compared with 94.5% 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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