Prosecution Insights
Last updated: October 27, 2026

Kathleen Paige Farrell, USPTO Patent Examiner

Listed by the USPTO as FARRELL, KATHLEEN PAIGE

Tech Center 3700 • Art Units: 3783

This examiner grants 38% of resolved cases

Analysis

Kathleen Paige Farrell is an examiner in Tech Center 3700, Art Unit 3783, with 8 resolved cases. The allowance rate of 37.5% suggests a challenging prosecution environment for applicants. This 37.5% rate is paired with a median days to allowance of 1268, which outlines the expected duration for successful cases. Top companies include Terumo Corporation and Intervene Inc., which are active in this examiner's docket.

The interview lift is 71.4%, suggesting that interviews are a highly effective strategy to improve the 37.5% allowance rate. This 71.4% lift is a significant metric for this profile, indicating that direct communication can dramatically change the outcome. BUCHANAN, INGERSOLL & ROONEY PC is a top firm navigating these specific prosecution dynamics. With only 8 resolved cases, the examiner's profile is still developing, but the 1268-day timeline and the 71.4% lift provide critical guidance for practitioners. Early engagement through interviews appears to be the most productive path to overcoming rejections. The 1268 days to allowance and the 37.5% rate should be factored into long-term strategic planning.

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

Performance Statistics

37.5%
Allow Rate
-32.5% vs TC avg
10
Total Applications
+71.4%
Interview Lift
1268
Avg Prosecution Days
Based on 8 resolved cases, 2023–2026

Rejection Statute Breakdown

2.6%
§101 Eligibility
21.1%
§102 Novelty
52.6%
§103 Obviousness
21.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17037212 PREFILLED SYRINGE, LIQUID MEDICINE ADMINISTRATION SYSTEM, AND SYRINGE PUMP Final Rejection TERUMO KABUSHIKI KAISHA

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Frequently Asked Questions

What is examiner Kathleen Paige Farrell's allowance rate?

37.5% of resolved applications examined by Kathleen Paige Farrell were allowed (8 resolved cases), compared with 67.3% across Art Unit 3783 over the last five years.

Does an interview help with examiner Kathleen Paige Farrell?

This examiner's interview lift is +71.4 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Kathleen Paige Farrell take to allow a patent?

Applications allowed by Kathleen Paige Farrell took 1,268 days on average from filing to allowance.

Which art unit does examiner Kathleen Paige Farrell work in?

Kathleen Paige Farrell examines applications in Art Unit 3783 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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