Prosecution Insights
Last updated: October 01, 2026

Examiner: COLLISTER, ELIZABETH A

Tech Center 1700 • Art Units: 1738 1742 1784 1788

This examiner grants 82% of resolved cases

Analysis

Elizabeth A. Collister has resolved 373 cases in Tech Center 1700. Her work in Art Unit 1738 is marked by an allowance rate of 81.5 percent. This statistic is a primary tool for practitioners to estimate the probability of success for applications under her review and to adjust their prosecution strategies accordingly.

The median days to allowance for this examiner is 997. This timeframe is essential for managing the expectations of patent applicants and for planning the lifecycle of an intellectual property asset. A duration of 997 days provides a clear benchmark for the time investment required to achieve a patent grant.

Furthermore, the interview lift is 14.3 percent. This suggests that conducting an interview can significantly enhance the chances of allowance beyond the 81.5 percent rate. The 14.3 percent lift highlights the value of direct communication as a means to resolve technical disagreements and expedite the path to a final decision.

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

Performance Statistics

81.5%
Allow Rate
+16.5% vs TC avg
396
Total Applications
+14.3%
Interview Lift
997
Avg Prosecution Days
Based on 373 resolved cases, 2023–2026

Rejection Statute Breakdown

0.2%
§101 Eligibility
19.7%
§102 Novelty
52.6%
§103 Obviousness
18.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18680250 ZIRCONIA MILL BLANK FOR DENTAL CUTTING AND MACHINING AND PREPARING METHOD THEREOF, AND TRANSPARENCY IMPROVING LIQUID FOR ZIRCONIA MILL BLANK FOR DENTAL CUTTING AND MACHINING AND USING METHOD THEREOF Non-Final OA SHOFU INC.
18680180 ZIRCONIA MILL BLANK FOR DENTAL CUTTING AND MACHINING AND PREPARING METHOD THEREOF, AND TRANSPARENCY IMPROVING LIQUID FOR ZIRCONIA MILL BLANK FOR DENTAL CUTTING AND MACHINING AND USING METHOD THEREOF Non-Final OA SHOFU INC.
19003785 ELASTOMER COMPONENTS AND APPARATUSES AND METHODS COMPRISING ELASTOMER COMPONENTS Non-Final OA The Boeing Company
17606308 ZIRCONIA PRE-SINTERED BODY SUITABLE FOR DENTAL USE AND METHOD FOR PRODUCING THE SAME Final Rejection KURARAY NORITAKE DENTAL INC.
18528989 COMPRESSOR INNER AIR SEAL AND METHOD OF MAKING Non-Final OA RTX Corporation
19022059 ORGANIC SOLID CRYSTALS WITH ENHANCED ADHESION Non-Final OA Meta Platforms Technologies, LLC
19021143 GLASS ARTICLE Non-Final OA AGC Inc.
19105090 PLASTERBOARD AND MANUFACTURE THEREOF Non-Final OA SAINT-GOBAIN PLACO
18595965 GRADE POWDERS AND SINTERED CEMENTED CARBIDE COMPOSITIONS Final Rejection Kennametal Inc.
18692377 THERMOPLASTIC POLYURETHANE FOAM STEERING WHEEL COVER Final Rejection Lubrizol Advanced Materials, Inc.

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