Prosecution Insights
Last updated: October 01, 2026

Examiner: GWARTNEY, ELIZABETH A

Tech Center 1700 • Art Units: 1759 1781 1791 1793 1794 1796

This examiner grants 36% of resolved cases

Analysis

Elizabeth A Gwartney operates in Tech Center 1700 and Art Unit 1759, where she has managed 678 resolved cases. Her allowance rate is 36.0 percent, reflecting a challenging prosecution landscape for applicants. This rate suggests that a high level of detail and robust arguments are necessary to secure a patent grant.

The median days to allowance for Gwartney is 2561, which is a very long duration for the patent application process. Practitioners should manage client expectations regarding the timeline when assigned to this examiner. However, the data also shows an interview lift of 34.8 percent. This lift indicates that interviews are a productive tool for increasing the chances of allowance. Given the high volume of 678 resolved cases, these statistics provide a reliable indication of the examiner's consistent approach to patent examination and the potential benefits of direct engagement.

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

Performance Statistics

36.0%
Allow Rate
-29.0% vs TC avg
743
Total Applications
+34.8%
Interview Lift
2561
Avg Prosecution Days
Based on 678 resolved cases, 2023–2026

Rejection Statute Breakdown

3.5%
§101 Eligibility
7.7%
§102 Novelty
51.1%
§103 Obviousness
32.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18725734 NATURAL SAUCE, AND METHOD FOR PREPARING SAME Non-Final OA CJ CHEILJEDANG CORPORATION
19199300 FLAVOR COMPOSITIONS AND SCREENING METHODS FOR IDENTIFYING THE SAME Non-Final OA MARS, INCORPORATED
18840221 LUTEIN/ZEAXANTHIN FORMULATIONS Non-Final OA DSM IP ASSETS B.V.
18713284 COMPOSITIONS HAVING HIGH LEVELS OF DPA (n-3) AND METHODS FOR PRODUCING Non-Final OA DSM IP Assets B.V.
18863107 CHEESE SUBSTITUTE PRODUCT Non-Final OA CARGILL, INCORPORATED
18863121 CHEESE SUBSTITUTE PRODUCT Non-Final OA CARGILL, INCORPORATED
18856237 PROCESS FOR PREPARING BISCUIT FILLINGS Non-Final OA Cargill, Incorporated
18719331 PROCESS FOR REMOVING IMPURITIES FROM VEGETABLE OIL Final Rejection CARGILL, INCORPORATED
18880968 MEAT-ANALOGUE COMPOSITION Non-Final OA AAK AB (publ)
17045060 POLYMETHOXYFLAVONES AS SWEETNESS ENHANCERS Non-Final OA Firmenich SA
18692934 CHEESE-LIKE FOOD PRODUCT Non-Final OA ADEKA CORPORATION
17199274 ENZYMATIC DEGRADATION OF MYCOTOXINS DURING GRAIN PROCESSING Non-Final OA POET Research, Inc.
18283304 LOW-ALCOHOL BEER-TASTE BEVERAGE AND METHOD FOR PRODUCING SAME Final Rejection Asahi Group Holdings, Ltd.
18282850 LOW-ALCOHOL BEER-TASTE BEVERAGE AND METHOD FOR MANUFACTURING SAME Final Rejection Asahi Group Holdings, Ltd.
18470049 METHOD FOR PRODUCING A MILK PRODUCT AND A MILK PRODUCT Final Rejection Valio LTD

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