Prosecution Insights
Last updated: October 27, 2026

Iqbal Hossain Chowdhury, USPTO Patent Examiner

Listed by the USPTO as CHOWDHURY, IQBAL HOSSAIN

Tech Center 1700 • Art Units: 1652 1656 1761

This examiner grants 74% of resolved cases

Analysis

CHOWDHURY, IQBAL HOSSAIN works in Tech Center 1700 and Art Unit 1652. The record contains 1011 resolved cases, a 73.6% allowance rate, and a median of 1097 days to allowance. Interview lift is 57.6%, the strongest reported interview association in this profile, making examiner interviews an important consideration for prosecution strategy.

The leading companies are Novozymes A/S, BASF SE, and Alcheme Bio Inc. The listed firms are ARENTFOX SCHIFF LLP, FOLEY & LARDNER LLP, and Hall Estill Hardwick Gable Golden & Nelson, P.C. The substantial case history gives the outcome measures useful context, while the median timing supports early coordination of interview requests and substantive responses.

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

Performance Statistics

73.6%
Allow Rate
+8.6% vs TC avg
1,036
Total Applications
+57.6%
Interview Lift
1097
Avg Prosecution Days
Based on 1011 resolved cases, 2023–2026

Rejection Statute Breakdown

3.7%
§101 Eligibility
24.3%
§102 Novelty
32.2%
§103 Obviousness
30.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18720123 METHOD FOR IMPROVED PRODUCTION OF INTRACELLULAR PROTEINS IN BACILLUS Non-Final OA BASF SE
17620786 METHOD FOR PREPARING A FERMENTATION MEDIUM Final Rejection BASF SE
19018909 ENGINEERED CLOSTRIDIUM THERMOCELLUM FOR CO-UTILIZATION OF HEMICELLULOSE AND CELLULOSE Non-Final OA Alliance for Energy Innovation, LLC
18857436 PRODUCTION OF FATTY ACID ALKYL ESTERS Non-Final OA Novozymes A/S
18557507 DETERGENT COMPOSITION WITH REDUCED POLYMER CONTENT Non-Final OA Novozymes A/S
18257665 IMPROVED FIBER-WASH IN CORN WET-MILLING Final Rejection NOVOZYMES A/S
18249231 LIPASE VARIANTS AND COMPOSITIONS COMPRISING SUCH LIPASE VARIANTS Non-Final OA Novozymes A/S
18729704 RECOMBINANTLY EXPRESSED GLUTAMATE OXIDASE Non-Final OA KIKKOMAN CORPORATION
17786721 OPTIMIZED GENE THERAPY FOR TARGETING MUSCLE IN MUSCLE DISEASES Non-Final OA RESEARCH INSTITUTE AT NATIONWIDE CHILDREN'S HOSPITAL

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 Iqbal Hossain Chowdhury's allowance rate?

73.6% of resolved applications examined by Iqbal Hossain Chowdhury were allowed (1,011 resolved cases), compared with 53.5% across Art Unit 1652 over the last five years.

Does an interview help with examiner Iqbal Hossain Chowdhury?

This examiner's interview lift is +57.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Iqbal Hossain Chowdhury take to allow a patent?

Applications allowed by Iqbal Hossain Chowdhury took 1,097 days on average from filing to allowance.

Which art unit does examiner Iqbal Hossain Chowdhury work in?

Iqbal Hossain Chowdhury examines applications in Art Unit 1652 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