Prosecution Insights
Last updated: October 26, 2026

Leslie Ann Lopez, USPTO Patent Examiner

Listed by the USPTO as LOPEZ, LESLIE ANN

Tech Center 3700 • Art Units: 3774 3785

This examiner grants 66% of resolved cases

Analysis

LOPEZ, LESLIE ANN works in Tech Center 3700 and Art Unit 3774. Her record covers 668 resolved cases, with a 65.6% allowance rate and a median of 1285 days to allowance. Interview lift is 34.1%, indicating a strong positive association between interviews and allowance outcomes.

The leading companies are Alcon Inc., Edwards Lifesciences Corporation, and Rxsight Inc. FOLEY & LARDNER LLP, SHAY GLENN LLP, and Barclay Damon LLP are the associated firms. The moderate allowance rate and extended timing support early prosecution planning, while the interview result makes well-prepared examiner engagement a potentially valuable part of the response strategy.

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

Performance Statistics

65.6%
Allow Rate
-4.4% vs TC avg
714
Total Applications
+34.1%
Interview Lift
1285
Avg Prosecution Days
Based on 668 resolved cases, 2023–2026

Rejection Statute Breakdown

1.6%
§101 Eligibility
20.4%
§102 Novelty
40.0%
§103 Obviousness
29.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18938976 Cemented Sheath For Joint Implant Non-Final OA Howmedica Osteonics Corp.
18649831 ENDOLUMINAL DEVICE Non-Final OA BOSTON SCIENTIFIC SCIMED, INC.
18167546 IMPLANTABLE LENS CAPSULE FOR INTRAOCULAR LENS INSERTION Non-Final OA THE JOHNS HOPKINS UNIVERSITY
18823351 DOCKING STATION FOR HEART VALVE PROSTHESIS Non-Final OA EDWARDS LIFESCIENCES CORPORATION
18526391 HYBRID FRAME FOR PROSTHETIC HEART VALVE Non-Final OA EDWARDS LIFESCIENCES CORPORATION
17792488 CYLINDRICAL EMBEDDED MATERIAL FOR MEDICAL USE Non-Final OA HI-LEX CORPORATION
17297412 PROSTHESIS LINER Final Rejection Ottobock SE & Co. KGAA

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Frequently Asked Questions

What is examiner Leslie Ann Lopez's allowance rate?

65.6% of resolved applications examined by Leslie Ann Lopez were allowed (668 resolved cases), compared with 61.7% across Art Unit 3774 over the last five years.

Does an interview help with examiner Leslie Ann Lopez?

This examiner's interview lift is +34.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Leslie Ann Lopez take to allow a patent?

Applications allowed by Leslie Ann Lopez took 1,285 days on average from filing to allowance.

Which art unit does examiner Leslie Ann Lopez work in?

Leslie Ann Lopez examines applications in Art Unit 3774 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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