Prosecution Insights
Last updated: October 25, 2026

Leah Elizabeth Stein, USPTO Patent Examiner

Listed by the USPTO as STEIN, LEAH ELIZABETH

Tech Center 1600 • Art Units: 1641

This examiner grants 100% of resolved cases

Analysis

Leah Elizabeth Stein is an examiner in Art Unit 1641 of Tech Center 1600. The data shows 1 resolved case with a 100.0% allowance rate and a median days to allowance of 1064. The interview lift is 0.0% for this single resolved matter.

Children's Healthcare of Atlanta Inc. is the top company listed for this examiner. While the 100.0% allowance rate is based on a single case, the 1064-day pendency provides an initial baseline for the timeline. The lack of interview lift data suggests that practitioners should rely on the 100.0% rate with caution until more cases are resolved.

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

Performance Statistics

100.0%
Allow Rate
+40.0% vs TC avg
2
Total Applications
+0.0%
Interview Lift
1064
Avg Prosecution Days
Based on 1 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
0%
§102 Novelty
28.6%
§103 Obviousness
42.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18271364 Interleukin-37, Chimeric Antigen Receptors, Nucleic Acids, and Vectors Encoding the Same and Uses in Cancer Therapies Final Rejection Children's Healthcare of Atlanta, Inc.

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Frequently Asked Questions

What is examiner Leah Elizabeth Stein's allowance rate?

100.0% of resolved applications examined by Leah Elizabeth Stein were allowed (1 resolved cases), compared with 45.2% across Art Unit 1641 over the last five years.

Does an interview help with examiner Leah Elizabeth Stein?

This examiner's interview lift is +0.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Leah Elizabeth Stein take to allow a patent?

Applications allowed by Leah Elizabeth Stein took 1,064 days on average from filing to allowance.

Which art unit does examiner Leah Elizabeth Stein work in?

Leah Elizabeth Stein examines applications in Art Unit 1641 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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