Prosecution Insights
Last updated: October 04, 2026

Examiner: BROOKS, CLINTON A

Tech Center 1600 • Art Units: 1621 1622 1625 1671

This examiner grants 68% of resolved cases

Analysis

Clinton A Brooks examines applications in Tech Center 1600 and Art Unit 1621. He has managed a large volume of 975 resolved cases. The allowance rate for these cases is 67.8 percent. The median days to allowance for his cases is 1012, providing a timeline of nearly three years for applicants to expect during the prosecution process.

The interview lift for this examiner is 19.6 percent. This positive lift suggests that interviews can provide a significant benefit in securing an allowance. Given the 67.8 percent allowance rate, the examiner is generally inclined to grant patents, and the 19.6 percent lift can be a helpful tool in closer cases. The 975 resolved cases make these statistics very robust and reliable for practitioners.

The 1012 days to allowance is a key metric for managing client expectations regarding pendency. The 67.8 percent allowance rate indicates a favorable environment for applicants in Art Unit 1621. The 19.6 percent interview lift shows that direct communication is a viable and effective strategy. These figures provide a comprehensive view of the examiner's long-term performance trends and efficiency. The data reflects a consistent pattern of examiner behavior.

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

Performance Statistics

67.8%
Allow Rate
+7.8% vs TC avg
983
Total Applications
+19.6%
Interview Lift
1012
Avg Prosecution Days
Based on 975 resolved cases, 2023–2026

Rejection Statute Breakdown

0.9%
§101 Eligibility
20.2%
§102 Novelty
43.0%
§103 Obviousness
19.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18031514 METHOD FOR STORING FLUORO-2-BUTENE Non-Final OA Resonac Corporation
18160650 VIRUCIDAL COMPOSITIONS AND USE THEREOF Final Rejection ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
18256350 2-HYDROXY-5-[2-(4-(TRIFLUOROMETHYLPHENYL)ETHYLAMINO)]BENZOIC ACID CRYSTAL FORMS AND PREPARATION METHOD THEREFOR Non-Final OA GNT PHARMA CO., LTD.

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