Prosecution Insights
Last updated: October 27, 2026

Andrew J Rost, USPTO Patent Examiner

Listed by the USPTO as ROST, ANDREW J

Tech Center 3700 • Art Units: 3753

This examiner grants 66% of resolved cases

Analysis

ROST, ANDREW J is associated with tech center 3700 and art unit 3753. The record includes 842 resolved cases, a 65.7% allowance rate, and a median of 1158 days to allowance. The 19.9% interview lift indicates a meaningful positive association between interviews and allowance outcomes.

The listed companies are Lam Research Corporation, Shinwa Controls Co. Ltd., and KYB Corporation. The listed firms are Bookoff McAndrews, PLLC, CARTER, DELUCA & FARRELL LLP, and DORITY & MANNING, P.A. Applicants should plan for the median prosecution duration and can use interviews as part of a broader effort to address claim scope, prior art, and amendment options.

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

Performance Statistics

65.7%
Allow Rate
-4.3% vs TC avg
877
Total Applications
+19.9%
Interview Lift
1158
Avg Prosecution Days
Based on 842 resolved cases, 2023–2026

Rejection Statute Breakdown

0.5%
§101 Eligibility
24.2%
§102 Novelty
48.0%
§103 Obviousness
22.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18877152 ISOLATION VALVE Final Rejection Lam Research Corporation
19282056 HIGH CONDUCTANCE VARIABLE ORIFICE VALVE Non-Final OA Applied Materials, Inc.
18785032 VENT PORT DIFFUSER Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Who Appears Before This Examiner

Top companies before this examiner

Law firms appearing most often

Frequently Asked Questions

What is examiner Andrew J Rost's allowance rate?

65.7% of resolved applications examined by Andrew J Rost were allowed (842 resolved cases), compared with 65.5% across Art Unit 3753 over the last five years.

Does an interview help with examiner Andrew J Rost?

This examiner's interview lift is +19.9 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 J Rost take to allow a patent?

Applications allowed by Andrew J Rost took 1,158 days on average from filing to allowance.

Which art unit does examiner Andrew J Rost work in?

Andrew J Rost examines applications in Art Unit 3753 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month