Prosecution Insights
Last updated: October 26, 2026

William M Mccalister, USPTO Patent Examiner

Listed by the USPTO as MCCALISTER, WILLIAM M

Tech Center 3700 • Art Units: 2853 3753 3763

This examiner grants 69% of resolved cases

Analysis

MCCALISTER, WILLIAM M handles cases in Tech Center 3700 and Art Unit 2853. His record includes 1050 resolved cases, with a 69.2% allowance rate and a median of 1065 days to allowance. The volume supports a stable view of the profile, while the allowance rate reflects a mixed outcome record and the timing suggests that allowance may require sustained prosecution effort.

The interview lift is 19.6%, showing a positive association between interviews and allowance outcomes. The listed companies are A. Raymond et Cie, Svm Schultz Verwaltungs-Gmbh & Co. Kg, and J Van Walraven Holding B V. The leading firms are Abel Schillinger, LLP, Buchanan Ingersoll & Rooney PC, and CANTOR COLBURN LLP. These organizations identify recurring sources of experience in the examiner's docket.

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

Performance Statistics

69.2%
Allow Rate
-0.8% vs TC avg
1,081
Total Applications
+19.6%
Interview Lift
1065
Avg Prosecution Days
Based on 1050 resolved cases, 2023–2026

Rejection Statute Breakdown

0.4%
§101 Eligibility
21.5%
§102 Novelty
43.4%
§103 Obviousness
29.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19383884 VALVE FOR A FLUID SYSTEM OF A VEHICLE Non-Final OA HELLA GmbH & Co. KGaA
19243435 Fastening Assembly, and Part In Preassembly and Fastening System Including Same Non-Final OA Illinois Tool Works Inc.
19481650 PNEUMATIC ADAPTER Non-Final OA BELIMO HOLDING AG
19124985 HYDROGEN FUELING SYSTEMS WITH MULTIPLE FUEL SOURCES Non-Final OA Cummins Inc.
19332532 System and Method for Enhanced Provision of Hot Water Non-Final OA INSINKERATOR LLC
18877041 Fastening Part Non-Final OA A. RAYMOND ET CIE
18820936 SUBSTRATE PROCESSING APPARATUS, SUBSTRATE PROCESSING METHOD AND NON-TRANSITORY COMPUTER READABLE RECORDING MEDIUM STORING SUBSTRATE PROCESSING PROGRAM Non-Final OA SCREEN Holdings Co., Ltd.
19111405 POLYGONAL WASHER AND FASTENING STRUCTURE Non-Final OA NIPPON PLARAD CO.
18849303 HOLDING PLATE FOR MULTIPLE SCREW DIAMETERS Non-Final OA EJOT SE & Co. KG

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Frequently Asked Questions

What is examiner William M Mccalister's allowance rate?

69.2% of resolved applications examined by William M Mccalister were allowed (1,050 resolved cases), compared with 72.7% across Art Unit 2853 over the last five years.

Does an interview help with examiner William M Mccalister?

This examiner's interview lift is +19.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner William M Mccalister take to allow a patent?

Applications allowed by William M Mccalister took 1,065 days on average from filing to allowance.

Which art unit does examiner William M Mccalister work in?

William M Mccalister examines applications in Art Unit 2853 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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