Prosecution Insights
Last updated: October 02, 2026

Examiner: ELLINGTON, MARRIAH C G

Tech Center 1700 • Art Units: 1773

This examiner grants 50% of resolved cases

Analysis

Marriah C. G. Ellington has resolved 32 cases in Art Unit 1773 of Tech Center 1700. The examiner has an allowance rate of 50.0 percent, indicating a balanced prosecution environment where success and failure are equally likely. This 50.0 percent rate suggests that practitioners must be diligent in addressing the examiner's concerns to secure an allowance.

The interview lift is 31.4 percent. This indicates that interviews are a productive tool for resolving issues and securing an allowance, providing a meaningful boost to the probability of success. The 31.4 percent lift suggests that direct engagement is a useful strategy for overcoming any remaining hurdles in the prosecution process.

The median days to allowance is 1265. This duration provides a clear expectation for the timing of the prosecution process in Art Unit 1773. The 1265-day benchmark is a useful reference point for practitioners when planning the overall prosecution strategy.

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

Performance Statistics

50.0%
Allow Rate
-15.0% vs TC avg
59
Total Applications
+31.4%
Interview Lift
1265
Avg Prosecution Days
Based on 32 resolved cases, 2023–2026

Rejection Statute Breakdown

1.3%
§101 Eligibility
14.9%
§102 Novelty
43.9%
§103 Obviousness
38.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18728176 POROUS MEMBRANE AND POROUS MEMBRANE LAMINATE Non-Final OA SUMITOMO ELECTRIC INDUSTRIES, LTD.
17619204 Method in Bioprocess Purification System Final Rejection Cytiva Sweden AB
17421757 MEMBRANE WITH IMMOBILIZED ANTICOAGULANT AND PROCESS FOR PRODUCING SAME Non-Final OA GAMBRO LUNDIA AB

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