Prosecution Insights
Last updated: October 26, 2026

Catherine A Loikith, USPTO Patent Examiner

Listed by the USPTO as LOIKITH, CATHERINE A

Tech Center 4100 • Art Units: 3656 3672 3674 3676 4100

This examiner grants 85% of resolved cases

Analysis

LOIKITH, CATHERINE A handles applications in Tech Center 4100 and Art Unit 3656. Her record reports 990 resolved cases, an 85.1% allowance rate, and a median of 912 days to allowance. Interview lift is 7.7%, reflecting a positive but limited association with allowance outcomes.

Halliburton Energy Services Inc., Schlumberger Technology Corporation, and Seiko Epson Corporation are the listed companies. ABB - Whitmyer IP Group LLC, AMPACC Law Group, PLLC, and ARENTFOX SCHIFF LLP are the associated firms. The substantial case volume supports using the profile for directional planning, with the allowance rate favoring focused claim prosecution and the interview result supporting selective examiner engagement.

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

Performance Statistics

85.1%
Allow Rate
+25.1% vs TC avg
1,011
Total Applications
+7.7%
Interview Lift
912
Avg Prosecution Days
Based on 990 resolved cases, 2023–2026

Rejection Statute Breakdown

0.9%
§101 Eligibility
25.5%
§102 Novelty
45.5%
§103 Obviousness
24.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19202467 INTERNAL SLIP DESIGN WITH MINIMUM BACKLASH FOR PACKERS SEAL ENHANCEMENT Non-Final OA Halliburton Energy Services, Inc.
18308079 DOWNHOLE DEVICE WITH BYPASS CAPABILITIES Non-Final OA Halliburton Energy Services, Inc.
18777963 Tabbed Lid Opening Hand, Tabbed Lid Opening System, And Method Of Opening Tabbed Lid Non-Final OA SEIKO EPSON CORPORATION
18422119 Robot Gripper and Method of Using It Non-Final OA ABB Schweiz AG
18851144 END-EFFECTOR AND METHOD FOR HANDLING A SUBSTRATE Non-Final OA ASML Netherlands B.V.

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Frequently Asked Questions

What is examiner Catherine A Loikith's allowance rate?

85.1% of resolved applications examined by Catherine A Loikith were allowed (990 resolved cases), compared with 66.7% across Art Unit 3656 over the last five years.

Does an interview help with examiner Catherine A Loikith?

This examiner's interview lift is +7.7 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Catherine A Loikith take to allow a patent?

Applications allowed by Catherine A Loikith took 912 days on average from filing to allowance.

Which art unit does examiner Catherine A Loikith work in?

Catherine A Loikith examines applications in Art Unit 3656 in Tech Center 4100.

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