Prosecution Insights
Last updated: October 04, 2026

Examiner: MERTZ, PREMA MARIA

Tech Center 1600 • Art Units: 1643 1646 1674

This examiner grants 72% of resolved cases

Analysis

Prema Maria Mertz, in Tech Center 1600 and Art Unit 1643, has 769 resolved cases. The allowance rate is 71.7 percent, and the interview lift is 35.4 percent. This 35.4 percent lift is very high compared to the 71.7 percent baseline. The 71.7 percent allowance rate is a strong baseline, which is significantly improved by the 35.4 percent lift, making interviews a highly recommended strategy.

The median time to allowance is 1013 days. Applicants have a 71.7 percent chance of success, which is greatly enhanced by the 35.4 percent interview lift. The 1013 day timeline is a standard expectation. With 769 resolved cases, the examiner's data is very consistent and highlights the importance of interviews. The 1013 day pendency and 35.4 percent lift are the key metrics for counsel to consider in Art Unit 1643. Utilizing the 35.4 percent lift is essential for success.

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

Performance Statistics

71.7%
Allow Rate
+11.7% vs TC avg
790
Total Applications
+35.4%
Interview Lift
1013
Avg Prosecution Days
Based on 769 resolved cases, 2023–2026

Rejection Statute Breakdown

6.7%
§101 Eligibility
12.9%
§102 Novelty
23.7%
§103 Obviousness
45.7%
§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
18252542 METHODS OF TREATING AXL-EXPRESSING CANCERS WITH ANTI-AXL ANTIBODIES, ANTIBODY FRAGMENTS AND THEIR IMMUNOCONJUGATES Non-Final OA BIOATLA, INC.
18518192 VISTA ANTIGEN-BINDING MOLECULES Non-Final OA Hummingbird Bioscience Pte. Ltd.
18604963 IL-2 MUTEINS AND USES THEREOF Non-Final OA Pandion Operations, Inc.
18585285 IL-2 MUTEINS AND USES THEREOF Non-Final OA Pandion Operations, Inc.
18597286 METHODS OF TREATING ATOPIC DERMATITIS Non-Final OA Receptos LLC
18277996 MULTI-DOMAIN FUSION PROTEIN AND USE THEREOF Non-Final OA ZHEJIANG DOER BIOLOGICS CO., LTD.
18265781 BISPECIFIC ANTIBODIES BINDING TO CD7 AND CD33 Non-Final OA BIVICTRIX LIMITED
18253197 HEAVY CHAIN ANTIBODIES BINDING TO FOLATE RECEPTOR ALPHA Non-Final OA TENEOSEVEN, INC.
17758279 IMMUNOGENIC CONJUGATE INTENDED TO INDUCE AN IMMUNE RESPONSE DIRECTED AGAINST INTERLEUKIN-6 Non-Final OA PEPTINOV
17758281 PHARMACEUTICAL COMPOSITION FOR THE PREVENTION OR TREATMENT OF POST-SURGICAL PAIN Non-Final OA PEPTINOV

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