Prosecution Insights
Last updated: October 26, 2026

Alina Rose Kaliszewski, USPTO Patent Examiner

Listed by the USPTO as KALISZEWSKI, ALINA ROSE

Tech Center 3700 • Art Units: 2881 3791

This examiner grants 85% of resolved cases

Analysis

KALISZEWSKI, ALINA ROSE is assigned to tech center 3700 and art unit 2881. Her profile includes 65 resolved cases, an allowance rate of 84.6%, and a median of 1100 days to allowance. Interviews are associated with a 23.3% lift in the recorded allowance rate. The figures show an allowance outcome that is substantially represented in the available case history.

The listed companies are Hitachi Ltd., ASML Holding N.V., and Micromass UK Limited. GOODWIN PROCTER LLP, CROWELL & MORING LLP, and Potomac Law Group, PLLC - AB Sciex are the listed firms. Practitioners can use the resolved-case record to assess how claim presentation and interview practice have operated in this art unit. The median duration remains relevant when planning prosecution schedules and client expectations.

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

Performance Statistics

84.6%
Allow Rate
+14.6% vs TC avg
130
Total Applications
+23.3%
Interview Lift
1100
Avg Prosecution Days
Based on 65 resolved cases, 2023–2026

Rejection Statute Breakdown

1.8%
§101 Eligibility
16.5%
§102 Novelty
51.2%
§103 Obviousness
30.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18357183 ANALYSIS APPARATUS AND ANALYSIS METHOD Non-Final OA FUJIFILM Corporation
18810735 REFLECTOR FOR GENERATING NEUTRAL BEAMS AND SUBSTRATE PROCESSING APPARATUS INCLUDING THE SAME Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18910322 THIN FILM THICKNESS MEASURING DEVICE AND THIN FILM THICKNESS MEASURING METHOD Non-Final OA Samsung Display Co., LTD.
18548062 ELECTRONIC TWEEZERS Non-Final OA ZHEJIANG UNIVERSITY
18697079 APPARATUS FOR PREPARING ELECTRON MICROSCOPY SAMPLES AND METHODS OF USE THEREOF Non-Final OA The Regents of the University of California
18864289 ION MILLING DEVICE AND ION MILLING METHOD Non-Final OA Hitachi High-Tech Corporation
18713248 METHOD FOR CONTROLLING MASS SPECTROMETER, AND MASS SPECTROMETER Non-Final OA Hitachi High-Tech Corporation
18390046 Processor System, Correction Method, and Correction Program Final Rejection Hitachi High-Tech Corporation
18010939 Electron Microscope Final Rejection Hitachi High-Tech Corporation
18864463 OBTAINING HIGH RESOLUTION INFORMATION FROM LOW RESOLUTION IMAGES Non-Final OA ASML Netherlands B.V.
17909352 BEAM ARRAY GEOMETRY OPTIMIZER FOR MULTI-BEAM INSPECTION SYSTEM Final Rejection ASML Netherlands B.V.
18508669 ION SOURCE APPARATUS AND MASS SPECTROMETER Non-Final OA SHIMADZU CORPORATION

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Frequently Asked Questions

What is examiner Alina Rose Kaliszewski's allowance rate?

84.6% of resolved applications examined by Alina Rose Kaliszewski were allowed (65 resolved cases), compared with 69.6% across Art Unit 2881 over the last five years.

Does an interview help with examiner Alina Rose Kaliszewski?

This examiner's interview lift is +23.3 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Alina Rose Kaliszewski take to allow a patent?

Applications allowed by Alina Rose Kaliszewski took 1,100 days on average from filing to allowance.

Which art unit does examiner Alina Rose Kaliszewski work in?

Alina Rose Kaliszewski examines applications in Art Unit 2881 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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