Prosecution Insights
Last updated: October 01, 2026

Examiner: BRANDENBURG, WILLIAM A

Tech Center 3600 • Art Units: 3600 3621 3622 3681

This examiner grants 22% of resolved cases

Analysis

William A. Brandenburg, an examiner in Tech Center 3600, has resolved 405 cases with a low allowance rate pct of 22.2. This suggests that Art Unit 3600 is a very difficult environment for securing a patent grant. The median days to allowance is 1854, which is an exceptionally long timeframe, indicating that prosecution with this examiner is both challenging and protracted.

The interview lift pct of 23.4 provides a path for improvement for applicants. This figure suggests that while the baseline allowance rate is only 22.2%, an interview can significantly improve the chances of success. Given the 1854-day median timeline, practitioners must be prepared for a long-term commitment and should use the 23.4% lift as a key part of their strategy. The low allowance rate and high pendency make this examiner difficult to navigate without proactive engagement.

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

Performance Statistics

22.2%
Allow Rate
-29.8% vs TC avg
407
Total Applications
+23.4%
Interview Lift
1854
Avg Prosecution Days
Based on 405 resolved cases, 2023–2026

Rejection Statute Breakdown

24.2%
§101 Eligibility
23.2%
§102 Novelty
27.2%
§103 Obviousness
21.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18504702 INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND PROGRAM Final Rejection NEC Corporation
18220496 ANYTIME VALID CONFIDENCE SEQUENCE FOR RELATIVE INCREMENT IN ONLINE TESTS Final Rejection Adobe Inc.

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