Prosecution Insights
Last updated: October 27, 2026

Katherine Ann Holtzman, USPTO Patent Examiner

Listed by the USPTO as HOLTZMAN, KATHERINE ANN

Tech Center 1600 • Art Units: 1644 1646

This examiner grants 65% of resolved cases

Analysis

HOLTZMAN, KATHERINE ANN is assigned to Tech Center 1600 and Art Unit 1644. The profile contains 71 resolved cases, with a 64.8% allowance rate and a median of 1341 days to allowance. The 59.4% interview lift indicates a substantially higher allowance outcome for cases involving interviews in the recorded data.

Janssen Pharmaceuticals Inc., University of Miami, and Hoffmann-La Roche Inc. are the listed companies. The listed firms are COOLEY LLP, FISH & RICHARDSON P.C. (TC), and GOODWIN PROCTER LLP. The interview measure makes interview preparation a prominent consideration for practitioners handling this examiner. The relatively small resolved-case record calls for case-specific review, while the median timing supports early attention to prosecution duration and possible strategic filings.

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

Performance Statistics

64.8%
Allow Rate
+4.8% vs TC avg
101
Total Applications
+59.4%
Interview Lift
1341
Avg Prosecution Days
Based on 71 resolved cases, 2023–2026

Rejection Statute Breakdown

6.2%
§101 Eligibility
11.8%
§102 Novelty
28.0%
§103 Obviousness
30.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18465854 COMPOSITIONS AND METHODS OF TREATING LUPUS NEPHRITIS Final Rejection Hoffmann-La Roche Inc.
17932739 TREATMENT OF PEDIATRIC ACUTE LYMPHOBLASTIC LEUKEMIA Non-Final OA AMGEN RESEARCH (MUNICH) GMBH
18562035 COMPOSITIONS AND METHODS FOR PRODUCING AND USING CELL-BASED IMMUNOTHERAPIES TO TARGET TUMORS Non-Final OA THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE
18708093 Enhancement Of CD47 Blockade Therapy With Anti-VEGF Agents Non-Final OA PFIZER INC.

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Frequently Asked Questions

What is examiner Katherine Ann Holtzman's allowance rate?

64.8% of resolved applications examined by Katherine Ann Holtzman were allowed (71 resolved cases), compared with 35.9% across Art Unit 1644 over the last five years.

Does an interview help with examiner Katherine Ann Holtzman?

This examiner's interview lift is +59.4 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Katherine Ann Holtzman take to allow a patent?

Applications allowed by Katherine Ann Holtzman took 1,341 days on average from filing to allowance.

Which art unit does examiner Katherine Ann Holtzman work in?

Katherine Ann Holtzman examines applications in Art Unit 1644 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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