Prosecution Insights
Last updated: October 26, 2026

Brandon J Fetterolf, USPTO Patent Examiner

Listed by the USPTO as FETTEROLF, BRANDON J

Tech Center 1600 • Art Units: 1622 1626 1628 1629 1642

This examiner grants 52% of resolved cases

Analysis

FETTEROLF, BRANDON J has 225 resolved cases in Tech Center 1600 and art unit 1622. The allowance rate is 51.6%, the interview lift is 18.5%, and the median time to allowance is 1300 days. The record indicates a moderate allowance outcome and an extended median timeline, with interviews providing a useful but not dominant measured effect.

The listed companies are THE GENERAL HOSPITAL Corporation, Astrazeneca AB, and Taiho Pharmaceutical Co., Ltd. The listed firms are OBLON, MCCLELLAND, MAIER & NEUSTADT, L.L.P., Abel Schillinger, LLP, and Apex Attorneys at Law, LLP. Practitioners should plan for continued prosecution, prepare focused interview topics, and maintain clear written support for amendments addressing the cited art.

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

Performance Statistics

51.6%
Allow Rate
-8.4% vs TC avg
285
Total Applications
+18.5%
Interview Lift
1300
Avg Prosecution Days
Based on 225 resolved cases, 2023–2026

Rejection Statute Breakdown

2.2%
§101 Eligibility
20.8%
§102 Novelty
28.8%
§103 Obviousness
29.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18033724 COMPOUNDS FOR THE TREATMENT OF VIRAL INFECTIONS Non-Final OA MERCK PATENT GMBH
18716645 METHOD FOR PRODUCING ISOXAZOLINECARBOXYLIC ACID DERIVATIVES Non-Final OA BAYER AKTIENGESELLSCHAFT
18035346 USE OF DIHYDROMYRICETIN AS EPIGENETIC ACTIVE INGREDIENT FOR COSMETIC OR DERMATOLOGICAL SKIN CARE Non-Final OA BEIERSDORF AG
18849729 INJECTABLE PREPARATION COMPRISING ISOXAZOLINE DERIVATIVE, AND PREPARATION METHOD THEREFOR Non-Final OA LG CHEM, LTD.

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Frequently Asked Questions

What is examiner Brandon J Fetterolf's allowance rate?

51.6% of resolved applications examined by Brandon J Fetterolf were allowed (225 resolved cases), compared with 60.6% across Art Unit 1622 over the last five years.

Does an interview help with examiner Brandon J Fetterolf?

This examiner's interview lift is +18.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Brandon J Fetterolf take to allow a patent?

Applications allowed by Brandon J Fetterolf took 1,300 days on average from filing to allowance.

Which art unit does examiner Brandon J Fetterolf work in?

Brandon J Fetterolf examines applications in Art Unit 1622 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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