Prosecution Insights
Last updated: October 26, 2026

Brian E Glessner, USPTO Patent Examiner

Listed by the USPTO as GLESSNER, BRIAN E

Tech Center 3600 • Art Units: 3633 3638

This examiner grants 37% of resolved cases

Analysis

This examiner is assigned to tech center 3600 and art unit 3633. The profile includes 174 resolved cases, with an allowance rate of 36.8% and a median of 1140 days to allowance. The interview lift is 22.5%, indicating that interviews may provide useful leverage even though the underlying allowance rate is below half.

Representative companies include Cetres Holdings LLC, Corning Incorporated, and Unilin B.V. The listed firms are FRESH IP PLC, BACON & THOMAS, PLLC, and Bodi Law LLC. The combination of a lower allowance rate, extended timing, and positive interview signal supports proactive issue identification and a prosecution plan that gives interviews a defined role.

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

Performance Statistics

36.8%
Allow Rate
-15.2% vs TC avg
195
Total Applications
+22.5%
Interview Lift
1140
Avg Prosecution Days
Based on 174 resolved cases, 2023–2026

Rejection Statute Breakdown

0.4%
§101 Eligibility
20.0%
§102 Novelty
50.2%
§103 Obviousness
23.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18036786 FENESTRATION APPARATUS AND RELATED METHODS Non-Final OA CORNING INCORPORATED
18252493 MODULAR CLADDING PANELS FOR BUILDINGS AND ASSOCIATED METHODS Final Rejection Buildz, LLC

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Who Appears Before This Examiner

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Frequently Asked Questions

What is examiner Brian E Glessner's allowance rate?

36.8% of resolved applications examined by Brian E Glessner were allowed (174 resolved cases), compared with 57.2% across Art Unit 3633 over the last five years.

Does an interview help with examiner Brian E Glessner?

This examiner's interview lift is +22.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Brian E Glessner take to allow a patent?

Applications allowed by Brian E Glessner took 1,140 days on average from filing to allowance.

Which art unit does examiner Brian E Glessner work in?

Brian E Glessner examines applications in Art Unit 3633 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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