Prosecution Insights
Last updated: August 18, 2026

Examiner: CHEU, CHANGHWA J

Tech Center 1600 • Art Units: 1641 1645 1677 1678

This examiner grants 75% of resolved cases

Performance Statistics

74.6%
Allow Rate
+14.6% vs TC avg
1,197
Total Applications
+47.4%
Interview Lift
972
Avg Prosecution Days
Based on 1193 resolved cases, 2023–2026

Rejection Statute Breakdown

6.6%
§101 Eligibility
18.8%
§102 Novelty
32.7%
§103 Obviousness
29.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18336644 FAST PROTEIN SEQUENCING Non-Final OA Regeneron Pharmaceuticals, Inc.

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