Prosecution Insights
Last updated: October 26, 2026

Karl J Puttlitz, USPTO Patent Examiner

Listed by the USPTO as PUTTLITZ, KARL J

Tech Center 1600 • Art Units: 1621 1624 1642 1643 1644 1646 1671

This examiner grants 69% of resolved cases

Analysis

Karl J. Puttlitz is an examiner in Tech Center 1600 and Art Unit 1621. He has 1434 resolved cases. His allowance rate is 69.2 percent. The interview lift is 18.5 percent, suggesting that interviews are a part of the prosecution process compared to the 69.2 percent baseline. This 18.5 percent lift indicates that verbal engagement is a way to address examiner concerns.

The median days to allowance is 932. His top companies include The Board of Trustees of the Leland Stanford Junior University, Genequantum Healthcare (Suzhou) Co. Ltd., and Sichuan Kelun-Biotech Biopharmaceutical Co. Ltd. Firms like BakerHostetler, HOXIE & ASSOCIATES LLC, and BROWN RUDNICK LLP are the top representatives. The 69.2 percent allowance rate and 932 median days to allowance indicate a prosecution path. With 1434 resolved cases, these metrics are established and provide a guide for practitioners appearing in Art Unit 1621. The 18.5 percent interview lift is a factor for consideration.

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

Performance Statistics

69.2%
Allow Rate
+9.2% vs TC avg
1,501
Total Applications
+18.5%
Interview Lift
932
Avg Prosecution Days
Based on 1434 resolved cases, 2023–2026

Rejection Statute Breakdown

1.6%
§101 Eligibility
11.5%
§102 Novelty
36.5%
§103 Obviousness
28.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18695618 PYRROLOBENZODIAZEPINE CONJUGATES FOR CANCER TREATMENT Non-Final OA SONY GROUP CORPORATION
18461170 CLIPTAC COMPOSITION Non-Final OA OTSUKA PHARMACEUTICAL CO., LTD.

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 Karl J Puttlitz's allowance rate?

69.2% of resolved applications examined by Karl J Puttlitz were allowed (1,434 resolved cases), compared with 46.0% across Art Unit 1621 over the last five years.

Does an interview help with examiner Karl J Puttlitz?

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 Karl J Puttlitz take to allow a patent?

Applications allowed by Karl J Puttlitz took 932 days on average from filing to allowance.

Which art unit does examiner Karl J Puttlitz work in?

Karl J Puttlitz examines applications in Art Unit 1621 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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