Prosecution Insights
Last updated: October 27, 2026

Andrew S Lo, USPTO Patent Examiner

Listed by the USPTO as LO, ANDREW S

Tech Center 3700 • Art Units: 3764 3778 3784

This examiner grants 72% of resolved cases

Analysis

LO, ANDREW S handles work in Tech Center 3700 and Art Unit 3764. His record includes 885 resolved cases, a 72.2% allowance rate, and a median of 805 days to allowance. Interview lift is 27.7%, indicating that applications associated with interviews had a materially higher allowance outcome in the reported data.

The listed companies are Aerobic And Fitness S L U, Castle Fit Corporation, and Kormel LLC. AMIN WASSERMAN GURNANI LLP, HANLEY, FLIGHT & ZIMMERMAN, LLC, and the Law Office of Michael Chen are the associated firms. The substantial case volume supports using this profile as a useful reference for prosecution planning in the relevant art unit, while the interview figure supports considering interviews as part of response strategy.

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

Performance Statistics

72.2%
Allow Rate
+2.2% vs TC avg
915
Total Applications
+27.7%
Interview Lift
805
Avg Prosecution Days
Based on 885 resolved cases, 2023–2026

Rejection Statute Breakdown

1.8%
§101 Eligibility
26.3%
§102 Novelty
39.4%
§103 Obviousness
26.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18936154 SPORTS TRAINING BAG ATTACHMENTS Final Rejection Individual inventor

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Frequently Asked Questions

What is examiner Andrew S Lo's allowance rate?

72.2% of resolved applications examined by Andrew S Lo were allowed (885 resolved cases), compared with 0.0% across Art Unit 3764 over the last five years.

Does an interview help with examiner Andrew S Lo?

This examiner's interview lift is +27.7 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 S Lo take to allow a patent?

Applications allowed by Andrew S Lo took 805 days on average from filing to allowance.

Which art unit does examiner Andrew S Lo work in?

Andrew S Lo examines applications in Art Unit 3764 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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