Prosecution Insights
Last updated: October 27, 2026

Lindsay Regan Lancaster, USPTO Patent Examiner

Listed by the USPTO as LANCASTER, LINDSAY REGAN

Tech Center 3700 • Art Units: 3794

This examiner grants 53% of resolved cases

Analysis

LANCASTER, LINDSAY REGAN works in tech center 3700 and art unit 3794. Across 105 resolved cases, the allowance rate is 53.3%, and the median time to allowance is 1434 days.

The interview lift is 21.5%, a positive association with the recorded allowance outcome. The recurring companies are Biosense Webster (Israel) Ltd., Abbott Laboratories, and Olympus Corporation. The leading firms are OLIFF PLC, Troutman Pepper Locke LLP, and Dentons Durham Jones Pinegar. Applicants should plan for both interview engagement and extended prosecution timing.

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

Performance Statistics

53.3%
Allow Rate
-16.7% vs TC avg
162
Total Applications
+21.5%
Interview Lift
1434
Avg Prosecution Days
Based on 105 resolved cases, 2023–2026

Rejection Statute Breakdown

2.3%
§101 Eligibility
20.7%
§102 Novelty
69.3%
§103 Obviousness
5.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17303591 MEDICAL TREATMENT SYSTEM Final Rejection Covidien LP
19021801 MEDICAL DEVICES AND RELATED METHODS Non-Final OA Boston Scientific Scimed, Inc.
17874583 ELECTRICAL FIELD VISUALIZATION FOR ELECTROPORATION CATHETER WITH MULTIPLE STATES Final Rejection Boston Scientific Scimed, Inc
19058881 SYSTEMS AND METHODS FOR PULSED FIELD ABLATION WITH SUPERIMPOSED WAVEFORMS Non-Final OA St. Jude Medical, Cardiology Division, Inc.
19042373 MEDICAL DEVICE FOR MAPPING AND/OR ABLATION Non-Final OA St. Jude Medical, Cardiology Division, Inc.
18753344 ELECTROPHYSIOLOGY DEVICE WITH ELECTRODES HAVING INCREASED SURFACE AREA Non-Final OA St. Jude Medical, Cardiology Division, Inc.
18506524 SYSTEMS AND METHODS FOR CATHETERS HAVING COMBINED MAPPING AND ABLATION CAPABILITIES Final Rejection St. Jude Medical, Cardiology Division, Inc.
18954953 PERICARDIAL TRANSECTION DEVICE WITH RETRACTABLE CUTTING APPARATUS Non-Final OA EDWARDS LIFESCIENCES CORPORATION
18630713 METHODS OF ENSURING PULSED FIELD ABLATION GENERATOR SYSTEM ELECTRICAL SAFETY Final Rejection Medtronic, Inc.
17678102 PULSED ELECTRIC FIELD (PEF) INDEX Final Rejection Medtronic, Inc.
18482815 CATHETER INSERTION TOOL Final Rejection Biosense Webster (Israel) Ltd.
17566336 Basket Catheter Having Ablation Electrodes and Temperature Sensors Final Rejection Biosense Webster (Israel) Ltd.
17555220 Irreversible Electroporation Return Electrode and System Final Rejection Biosense Webster (Israel) Ltd.
17535354 Attaining Higher Impedances for Large Indifferent Electrodes Final Rejection Biosense Webster (Israel) Ltd.
17124679 GUI FOR HIGHLIGHTING SIGNALS PRIOR, DURING, AND POST ABLATION USING MULTI-ELECTRODE CATHETERS Final Rejection BIOSENSE WEBSTER (ISRAEL) LTD.
19015608 ENDOSCOPE TREATMENT TOOL Non-Final OA Olympus Corporation
17719687 ELECTRODE INSTRUMENT, SURGICAL HANDHELD DEVICE, AND THEIR PRODUCTION METHODS Final Rejection OLYMPUS WINTER & IBE GMBH
17705601 OPERATION OF AN ELECTROSURGICAL GENERATOR Non-Final OA OLYMPUS WINTER & IBE GMBH
17677044 ELECTROSURGICAL HANDHELD DEVICE, AND CONTACT BODY FOR AN ELECTROSURGICAL HANDHELD DEVICE Final Rejection Olympus Winter & Ibe GmbH
19016698 MANIPULATION PART OF SURGICAL INSTRUMENT Non-Final OA LIVSMED INC.
18365502 TWO-MODE MORCELLATION DEVICE Final Rejection Gyrus ACMI, Inc. D/B/A Olympus Surgical Technologies America
17653486 DISTAL WIRE ROUTING FOR STRAIGHT JAW FORCEPS Final Rejection GYRUS ACMI, INC,D/B/A OLYMPUS SURGICAL TECHNOLOGIES AMERICA

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Frequently Asked Questions

What is examiner Lindsay Regan Lancaster's allowance rate?

53.3% of resolved applications examined by Lindsay Regan Lancaster were allowed (105 resolved cases), compared with 60.1% across Art Unit 3794 over the last five years.

Does an interview help with examiner Lindsay Regan Lancaster?

This examiner's interview lift is +21.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Lindsay Regan Lancaster take to allow a patent?

Applications allowed by Lindsay Regan Lancaster took 1,434 days on average from filing to allowance.

Which art unit does examiner Lindsay Regan Lancaster work in?

Lindsay Regan Lancaster examines applications in Art Unit 3794 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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