Prosecution Insights
Last updated: October 02, 2026

Examiner: WHITROCK, ZACHARIAH KIRBY

Tech Center 4100 • Art Units: 3781 3783 4100

This examiner grants 100% of resolved cases

Analysis

Zachariah Kirby Whitrock is an examiner in Art Unit 3781 within Tech Center 4100. His profile is based on 4 resolved cases, which is a small sample size that should be noted by practitioners. Despite the low volume, he maintains an allowance rate of 100.0 percent. This perfect record indicates that every case he has resolved thus far has resulted in a patent grant.

The interview lift for this examiner is 0.0 percent. Given the 100.0 percent allowance rate, this suggests that interviews have not been necessary to secure a grant in the 4 resolved cases. Practitioners may find that standard written prosecution is effective for achieving a positive outcome without the need for verbal advocacy. These initial metrics provide a starting point for understanding his examination style.

The median time to allowance is 1092 days. This 1092-day period reflects the duration of the prosecution process for the cases resolved so far. Attorneys can use this 1092-day benchmark to help their clients plan for the length of the patent lifecycle. As more cases are resolved in Art Unit 3781, these figures will provide a more comprehensive view of the examination environment.

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

Performance Statistics

100.0%
Allow Rate
+40.0% vs TC avg
24
Total Applications
+0.0%
Interview Lift
1092
Avg Prosecution Days
Based on 4 resolved cases, 2023–2026

Rejection Statute Breakdown

1.3%
§101 Eligibility
16.2%
§102 Novelty
67.5%
§103 Obviousness
14.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18846889 SHELL FOR SMALL VIAL TO FIT INTO INJECTOR OR CAP REMOVER Non-Final OA Janssen Biotech, Inc.
18530637 DEVICES, ASSEMBLIES, AND METHODS FOR DELIVERING AGENTS Non-Final OA Boston Scientific Scimed, Inc.
18798243 BODY-WEARABLE MEDICAL DEVICE COMPRISING A SUPERABSORBENT SUBSTANCE Non-Final OA Roche Diabetes Care, Inc.
17470942 CLOSED-LOOP DETECTION AND TREATMENT OF RADIATION AND TOXIC AGENTS Non-Final OA Massachusetts Institute of Technology
18632755 ROLLER CLAMP CONTROL MECHANISM Non-Final OA CareFusion 303, Inc.
18681847 SYSTEM AND METHOD FOR DETECTION AND CONTROL OF A SYRINGE PUMP EMPTY CONDITION Non-Final OA CareFusion 303, Inc.
18438331 SYSTEM AND METHOD FOR UTILIZING ANTEGRADE SHEATHS Non-Final OA ABIOMED, Inc.
18683768 INFUSION DEVICE HAVING A PROCESSING DEVICE CONFIGURED TO DETERMINE A VALUE INDICATIVE OF A SENSITIVITY OF A SENSOR DEVICE Final Rejection FRESENIUS VIAL SAS
18686946 FORMATION OF INJECTOR DEVICE STOPPER FEATURES Non-Final OA W. L. Gore & Associates, Inc.
18832532 Syringe With Minimal Internal Dead Volume Non-Final OA Becton, Dickinson and Company
18590423 Connected Drug Delivery Device Final Rejection Becton, Dickinson and Company
18585453 Cassette Body Clip for Auto-Injector Final Rejection Becton, Dickinson and Company
18585208 Drug Delivery Device Comprising a Cap Final Rejection Becton, Dickinson and Company
18128640 Line Draw Optimized Integrated Catheter Stabilization and Securement System Non-Final OA Becton, Dickinson and Company
18719717 Assembly for an Injection Device and an Injection Device Non-Final OA Sanofi
18564784 ELECTROPORATION PROCESS FOR DELIVERING A COMPOSITION COMPRISING AT LEAST ONE HYDROXY ACID COMPOUND Final Rejection L'OREAL
18435239 CONTROL DEVICE, INDEFLATION SYSTEM, AND INDEFLATION METHOD Non-Final OA Terumo Kabushiki Kaisha
18176969 SINGLE PACKAGE AUTOMATED DRUG DELIVERY SYSTEM Final Rejection INSULET CORPORATION
18724276 Sub-assembly for a medicament delivery device Non-Final OA SHL Medical AG
18724305 A sub-assembly of a medicament delivery device Non-Final OA SHL Medical AG
18725377 SWALLOWABLE, SELF-EXPANDABLE DRUG DELIVERY DEVICE AND USES THEREOF Non-Final OA ETH ZURICH
18711451 MODULAR FLAT SHEET MEMBRANE FILTER Non-Final OA BAXTER HEALTHCARE SA
18125361 DIALYSIS SYSTEM HAVING THERMOELECTRIC HEATING Non-Final OA BAXTER HEALTHCARE SA
18724799 SELF-ADMINISTRATION INJECTION DEVICE FOR RISPERIDONE Non-Final OA ORBICULAR PHARMACEUTICAL TECHNOLOGIES PRIVATE LIMITED
18573894 BREAST PUMP ASSEMBLY AND METHOD OF ALIGNING A BREAST PUMP ASSEMBLY Non-Final OA MAYBORN (UK) LIMITED

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