Prosecution Insights
Last updated: October 02, 2026

Examiner: GUSTILO, ESTELLA M

Tech Center 1600 • Art Units: 1644 1646

This examiner grants 54% of resolved cases

Analysis

Estella M. Gustilo serves in Tech Center 1600 and Art Unit 1644. The profile includes 69 resolved cases, which show an allowance rate of 53.6 percent. This 53.6 percent rate provides a baseline for practitioners to estimate the probability of a grant. With 69 resolved cases, the data provides a look at the examiner's tendencies in this biotechnology and organic chemistry center.

The data shows an interview lift of 34.5 percent. This figure indicates that conducting an interview is associated with an increased probability of allowance compared to the baseline of cases where no interview occurs. Practitioners may consider the 34.5 percent lift when deciding whether to engage in direct communication. This positive lift suggests that verbal advocacy is a significant factor in the prosecution process for Art Unit 1644.

The median days to allowance for Gustilo is 1279. This 1279-day timeline provides a benchmark for the expected duration of the prosecution process from filing to grant. The combination of the 53.6 percent allowance rate and the 34.5 percent interview lift offers a roadmap for applicants. Understanding these metrics, including the 1279-day median, helps in setting expectations for both timing and results in Tech Center 1600.

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

Performance Statistics

53.6%
Allow Rate
-6.4% vs TC avg
102
Total Applications
+34.5%
Interview Lift
1279
Avg Prosecution Days
Based on 69 resolved cases, 2023–2026

Rejection Statute Breakdown

4.2%
§101 Eligibility
13.8%
§102 Novelty
30.8%
§103 Obviousness
27.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18052172 METHODS OF TREATING CANCERS AND ENHANCING EFFICACY OF GPRC5DXCD3 BISPECIFIC ANTIBODIES Final Rejection Janssen Biotech, Inc.
17825244 ANTI-IDIOTYPIC ANTIBODIES AGAINST ANTI-CD79B ANTIBODIES Non-Final OA Janssen Biotech, Inc.
18799503 THERAPEUTIC AND DIAGNOSTIC METHODS FOR BLADDER CANCER Non-Final OA Genentech, Inc.
18416031 Anti-Jagged1 Antibodies and Methods of Use Non-Final OA Genentech, Inc.
17605798 FUSION POLYPEPTIDE COMPRISING Fc REGION OF IMMUNOGLOBULIN AND GDF15 Final Rejection LG CHEM, LTD.
17284284 EXTRACELLULAR VESICLES FOR TARGETED THERAPIES AGAINST MYELOID-DERIVED SUPPRESSOR CELLS Final Rejection Ohio State Innovation Foundation
17507414 METHODS OF TREATING CROHN'S DISEASE Non-Final OA ELI LILLY AND COMPANY
17425870 NOVEL BISPECIFIC CD3/CD20 POLYPEPTIDE COMPLEXES Non-Final OA WUXI BIOLOGICS IRELAND LIMITED
18484631 COMPOSITIONS AND METHODS FOR TREATING CANCER WITH SUBCUTANEOUS ADMINISTRATION OF ANTI-PD1 ANTIBODIES Non-Final OA Merck Sharp & Dohme LLC
18695945 PEANUT ALLERGY EPITOPE Non-Final OA Vanderbilt University
18818268 ANTIBODIES WITH FC MODIFICATIONS AND METHODS OF USING THE SAME Final Rejection The General Hospital Corporation
18453098 FCRN BINDING POLYPEPTIDES Non-Final OA THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
17818854 METHODS OF INCREASING RESPONSE TO CANCER RADIATION THERAPY Non-Final OA The Trustees of the University of Pennsylvania
18692039 MULTISPECIFIC ANTIBODIES FOR USE IN TREATING DISEASES Non-Final OA YEDA RESEARCH AND DEVELOPMENT CO. LTD.
18696689 MULTISPECIFIC BINDING AGENTS AGAINST PD-L1 AND CD137 IN COMBINATION THERAPY Non-Final OA BioNTech SE
18630379 Optimized CD3 Antigen Binding Domains Non-Final OA MedImmune, LLC

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