Prosecution Insights
Last updated: October 02, 2026

Examiner: SULLIVAN, DENNIS JOHN

Tech Center 1600 • Art Units: 1642 1644 1646 1674

This examiner grants 57% of resolved cases

Analysis

Dennis John Sullivan examines cases in Art Unit 1642 of Tech Center 1600. A total of 114 resolved cases are included in the data for this profile. The 57.9 percent allowance rate shows the portion of resolved applications that result in a grant. The 49.1 percent lift indicates the increase in the probability of a grant following an interview. This lift is a comparison to the baseline allowance rate of 57.9 percent. Practitioners can use the 49.1 percent figure to evaluate the impact of direct communication.

The median time to allowance is 1363 days. This 1363-day timeframe measures the span from application to patent issuance. Art Unit 1642 is the group where these 114 resolved cases were processed. Tech Center 1600 provides the broader organizational context for the examiner's work. Practitioners can use these metrics to set expectations for the length of the prosecution cycle. The data provides a basis for evaluating the impact of interviews during the patent application process.

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

Performance Statistics

57.3%
Allow Rate
-2.7% vs TC avg
162
Total Applications
+49.1%
Interview Lift
1366
Avg Prosecution Days
Based on 117 resolved cases, 2023–2026

Rejection Statute Breakdown

6.3%
§101 Eligibility
3.6%
§102 Novelty
41.8%
§103 Obviousness
27.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18038321 USE OF INSULIN-LIKE GROWTH FACTORS WITH GAMMA-CHAIN CYTOKINES TO INDUCE HOMEOSTATIC PROLIFERATION OF LYMPHOCYTES Non-Final OA UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INCORPORATED
18216026 Use of Anti-EGFR/Anti-Met Antibody to Treat Gastric or Esophageal Cancer Non-Final OA Janssen Biotech, Inc.
18300288 Clinically Proven Subcutaneous Pharmaceutical Compositions Comprising Anti-CD38 Antibodies and Their Uses in Combination with Bortezomib and Dexamethasone Non-Final OA Janssen Biotech, Inc.
18020515 PLASMA EXCHANGE REMOVAL OF SPD-L1 Final Rejection Mayo Foundation for Medical Education and Research
17769171 COMPOSITIONS AND METHODS FOR DETECTING PLXDC1 AND PLXDC2 IN HUMAN TISSUES Final Rejection THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
17286083 Methods to Diagnose and Treat Cancer Using Non-Human Nucleic Acids Final Rejection The Regents of the University of California
18565023 COMPOSITIONS AND METHODS TO TRANSFECT, TEST, AND TREAT SKIN CELLS Non-Final OA The Regents of the University of Michigan
18264799 METHODS OF TREATING CANCER BY ADMINISTERING A NEOADJUVANT PD-1 INHIBITOR Non-Final OA Regeneron Pharmaceuticals, Inc.
17517567 USE OF ISATUXIMAB FOR THE TREATMENT OF MULTIPLE MYELOMA Final Rejection Sanofi-Aventis U.S. LLC
17797916 COMPOSITION COMPRISING CHEMOKINE INHIBITOR, COLONY STIMULATING FACTOR INHIBITOR, AND CANCER IMMUNOTHERAPY AGENT FOR PREVENTION OR TREATMENT OF CANCER AND COMBINATION THERAPY Non-Final OA AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
18461081 NIDOGEN 1 AS A DIAGNOSTIC MARKER AND THERAPEUTIC TARGET OF HEPATOCELLULAR CARCINOMA, COMPOSITION AND METHODS THEREOF Final Rejection THE UNIVERSITY OF HONG KONG
17909310 ANTI-CCR8 AGENTS Final Rejection Memorial Sloan Kettering Cancer Center
18558505 METHODS OF TREATMENT OF AUTOIMMUNE DISORDERS USING ILT7 BINDING PROTEINS Non-Final OA Viela Bio, Inc.
17282580 METHODS AND PHARMACEUTICAL COMPOSITION FOR THE TREATMENT OF MUCOSAL INFLAMMATORY DISEASES Non-Final OA Enios Applications Private Limited Company

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