Prosecution Insights
Last updated: October 27, 2026

Prema Maria Mertz, USPTO Patent Examiner

Listed by the USPTO as MERTZ, PREMA MARIA

Tech Center 1600 • Art Units: 1643 1646 1674

This examiner grants 72% of resolved cases

Analysis

MERTZ, PREMA MARIA examines in tech center 1600 and art unit 1643. The profile contains 773 resolved cases and a 71.8% allowance rate. The interview lift is 34.6%, showing a meaningful positive association with allowance outcomes. The median time to allowance is 1015 days, which remains important for applicants managing development and filing schedules.

The listed companies include Pandion Operations Inc., Peptinov, and Dana-Farber Cancer Institute Inc. The listed firms are FisherBroyles, LLP, BakerHostetler, and FINNEGAN, HENDERSON, FARABOW, GARRETT & DUNNER. The outcome record supports treating this docket as one where allowance is common in the available data. The interview measure supports deliberate interview preparation, particularly when applicants can use discussion to narrow issues before committing to extensive claim amendments.

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

Performance Statistics

71.8%
Allow Rate
+11.8% vs TC avg
792
Total Applications
+34.6%
Interview Lift
1015
Avg Prosecution Days
Based on 773 resolved cases, 2023–2026

Rejection Statute Breakdown

6.8%
§101 Eligibility
13.0%
§102 Novelty
23.7%
§103 Obviousness
45.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17241935 DRUG DELIVERY COMPOSITIONS AND USES THEREOF Non-Final OA Dana-Farber Cancer Institute, Inc.
17786206 Adalimumab Variants with Reduced Immunogenic Potential Non-Final OA COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
18033464 ANTIBODIES FOR USE IN THE DETECTION AND TREATMENT OF HEART DISEASE Final Rejection BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
18253017 TREATMENT OF CASTLEMAN DISEASE Final Rejection THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA

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Frequently Asked Questions

What is examiner Prema Maria Mertz's allowance rate?

71.8% of resolved applications examined by Prema Maria Mertz were allowed (773 resolved cases), compared with 41.5% across Art Unit 1643 over the last five years.

Does an interview help with examiner Prema Maria Mertz?

This examiner's interview lift is +34.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Prema Maria Mertz take to allow a patent?

Applications allowed by Prema Maria Mertz took 1,015 days on average from filing to allowance.

Which art unit does examiner Prema Maria Mertz work in?

Prema Maria Mertz examines applications in Art Unit 1643 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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