Prosecution Insights
Last updated: October 26, 2026

Michael S Kellogg, USPTO Patent Examiner

Listed by the USPTO as KELLOGG, MICHAEL S

Tech Center 3700 • Art Units: 3737 3768 3791 3793 3798

This examiner grants 43% of resolved cases

Analysis

KELLOGG, MICHAEL S is a USPTO patent examiner in tech center 3700 and art unit 3737. The profile records 281 resolved cases, an allowance rate of 43.1%, and a median of 1480 days to allowance. Interview lift is 53.6%, showing that interviews are a significant feature of the measured prosecution record and may help focus discussion of claim construction and technical distinctions.

Canon Inc., Stryker Corporation, and Boston Scientific Corporation are the leading companies. The leading firms are FITCH EVEN TABIN & FLANNERY, LLP, HOWARD & HOWARD ATTORNEYS PLLC, and Nelson Mullins Riley & Scarborough LLP. Practitioners should prepare a focused interview agenda, address the substance in a detailed written response, and plan for extended prosecution before deciding how much claim scope to preserve.

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

Performance Statistics

43.1%
Allow Rate
-26.9% vs TC avg
306
Total Applications
+53.6%
Interview Lift
1480
Avg Prosecution Days
Based on 281 resolved cases, 2023–2026

Rejection Statute Breakdown

9.3%
§101 Eligibility
15.2%
§102 Novelty
36.6%
§103 Obviousness
37.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19314173 ULTRASOUND DIAGNOSIS APPARATUS, LESION DETECTION APPARATUS, AND LESION DETECTION METHOD Non-Final OA Canon Kabushiki Kaisha
17837376 Technique For Determining Poses Of Tracked Vertebrae Non-Final OA Stryker European Operations Limited
18038830 MICRODEVICE FOR ALLOWING A LOCALIZATION OF THE MICRODEVICE Non-Final OA KONINKLIJKE PHILIPS N.V.
15810818 Method And System For Dose-Less Attenuation Correction For PET And SPECT Non-Final OA Siemens Medical Solutions USA, Inc.

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Frequently Asked Questions

What is examiner Michael S Kellogg's allowance rate?

43.1% of resolved applications examined by Michael S Kellogg were allowed (281 resolved cases), compared with 0.0% across Art Unit 3737 over the last five years.

Does an interview help with examiner Michael S Kellogg?

This examiner's interview lift is +53.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Michael S Kellogg take to allow a patent?

Applications allowed by Michael S Kellogg took 1,480 days on average from filing to allowance.

Which art unit does examiner Michael S Kellogg work in?

Michael S Kellogg examines applications in Art Unit 3737 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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