Prosecution Insights
Last updated: October 27, 2026

Benjamin Joseph Kass, USPTO Patent Examiner

Listed by the USPTO as KASS, BENJAMIN JOSEPH

Tech Center 1700 • Art Units: 1632 1656 1682 1737 1758 1796 1797 1798 1799

This examiner grants 31% of resolved cases

Analysis

KASS, BENJAMIN JOSEPH is assigned to tech center 1700 and art unit 1632. The profile covers 45 resolved cases, with an allowance rate of 31.1% and a median of 1404 days to allowance. Interviews correspond to a 64.4% lift in the recorded allowance rate. The figures indicate a strong interview association within a record that otherwise shows a limited allowance outcome.

Hitachi Ltd., Illumina Inc., and Lumiradx UK Ltd. are the listed companies. The listed firms are Knobbe, Martens, Olson & Bear, LLP, Acuity Law Group, P.C., and ANDRUS INTELLECTUAL PROPERTY LAW, LLP. The case volume calls for matter-specific caution, but it supports prioritizing interview preparation where discussion can clarify substantive issues. Counsel should also account for the recorded duration when setting prosecution expectations.

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

Performance Statistics

31.1%
Allow Rate
-33.9% vs TC avg
119
Total Applications
+64.4%
Interview Lift
1404
Avg Prosecution Days
Based on 45 resolved cases, 2023–2026

Rejection Statute Breakdown

1.2%
§101 Eligibility
19.7%
§102 Novelty
47.5%
§103 Obviousness
30.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18070887 FLOW CELLS AND METHODS OF USE THEREOF Non-Final OA 10x Genomics, Inc.
18564531 FLUORESCENCE DETECTION VIA OUTCOUPLERS Final Rejection Hewlett-Packard Development Company, L.P.
17756254 APPARATUS, SYSTEMS, AND METHODS OF TRANSFERRING LIQUIDS CONTAINING AGGREGATES Final Rejection Siemens Healthcare Diagnostics Inc.
18370181 COMBINABLE NUCLEIC ACID PRE-PROCESSING APPARATUS Non-Final OA Delta Electronics, Inc.
17996602 AUTOMATIC ANALYZER Final Rejection HITACHI HIGH-TECH CORPORATION
17768288 AUTOMATIC ANALYZER Final Rejection Hitachi High-Tech Corporation
17693773 MICROFLUIDIC CARTRIDGES FOR ENHANCED AMPLIFICATION OF POLYNUCLEOTIDE-CONTAINING SAMPLES Final Rejection BECTON, DICKINSON AND COMPANY
17576968 Liquid Biological Sample Test Cartridge Non-Final OA Purdue Research Foundation
17622147 Method and Apparatus for Interrogating Biological Systems Final Rejection Arizona Board of Regents on Behalf of the University of Arizona
17617129 Centrifugal Microfluidic Chip, Kit and System for On-Chip Gas Supply Non-Final OA National Research Council of Canada
18773960 Droplet Assembly Method Non-Final OA Oxford University Innovation Limited
18386759 CARTRIDGE FOR DETECTING TARGET ANALYTE Final Rejection SEEGENE, INC.
18542447 FLOW CELLS Non-Final OA ILLUMINA, INC.
17790077 FLOW CELL ASSEMBLIES AND RELATED REAGENT SELECTOR VALVES Final Rejection ILLUMINA, INC.
18111176 SYSTEMS AND METHODS FOR TRAPPING AND TRANSPORTING SMALL PARTICLES WITH ACOUSTIC FORCES Final Rejection DUKE UNIVERSITY
18826892 FLUID CONTROL IN MICROFLUIDIC DEVICES Non-Final OA LumiraDx UK Ltd.
17860933 FLUID CONTROL IN MICROFLUIDIC DEVICES Final Rejection LumiraDx UK Ltd.
18649451 MICROFLUIDIC APPARATUS AND METHODS OF USE THEREOF Non-Final OA Medici Therapeutics, Inc.

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Who Appears Before This Examiner

Top companies before this examiner

Law firms appearing most often

Frequently Asked Questions

What is examiner Benjamin Joseph Kass's allowance rate?

31.1% of resolved applications examined by Benjamin Joseph Kass were allowed (45 resolved cases), compared with 38.1% across Art Unit 1632 over the last five years.

Does an interview help with examiner Benjamin Joseph Kass?

This examiner's interview lift is +64.4 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Benjamin Joseph Kass take to allow a patent?

Applications allowed by Benjamin Joseph Kass took 1,404 days on average from filing to allowance.

Which art unit does examiner Benjamin Joseph Kass work in?

Benjamin Joseph Kass examines applications in Art Unit 1632 in Tech Center 1700 (Chemistry & Materials).

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month