Prosecution Insights
Last updated: October 27, 2026

Andrew T Caldwell, USPTO Patent Examiner

Listed by the USPTO as CALDWELL, ANDREW T

Tech Center 2400 • Art Units: 2100 2182 2183 2445

This examiner grants 41% of resolved cases

Analysis

CALDWELL, ANDREW T handles cases in tech center 2400 and art unit 2100. Across 96 resolved cases, the allowance rate is 40.6%, while the interview lift is 7.0%. The median days to allowance are 1236, indicating that matters reaching allowance have moved through a lengthy prosecution timeline.

The principal companies in the profile are Robert Bosch GmbH, ARM Limited, and Analog Devices Inc. The listed firms are NORTON ROSE FULBRIGHT US LLP, OLIFF PLC, and Talem IP Law, LLP. The data supports attention to claim strategy and interview preparation, because the allowance outcome and interview-associated lift point to different aspects of prosecution performance.

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

Performance Statistics

40.6%
Allow Rate
-17.4% vs TC avg
106
Total Applications
+7.0%
Interview Lift
1236
Avg Prosecution Days
Based on 96 resolved cases, 2023–2026

Rejection Statute Breakdown

24.6%
§101 Eligibility
15.8%
§102 Novelty
30.5%
§103 Obviousness
23.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17449161 METHOD AND DEVICE FOR GENERATING A PSEUDO-RANDOM NUMBER SEQUENCE Non-Final OA Robert Bosch GmbH
18106274 1-HOT PATH SIGNATURE ACCELERATOR Non-Final OA Arm Limited
17963626 RANDOM NUMBER GENERATION Non-Final OA Analog Devices International Unlimited Company

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Frequently Asked Questions

What is examiner Andrew T Caldwell's allowance rate?

40.6% of resolved applications examined by Andrew T Caldwell were allowed (96 resolved cases), compared with 38.8% across Art Unit 2100 over the last five years.

Does an interview help with examiner Andrew T Caldwell?

This examiner's interview lift is +7.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Andrew T Caldwell take to allow a patent?

Applications allowed by Andrew T Caldwell took 1,236 days on average from filing to allowance.

Which art unit does examiner Andrew T Caldwell work in?

Andrew T Caldwell examines applications in Art Unit 2100 in Tech Center 2400 (Networking & Security).

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