Prosecution Insights
Last updated: October 27, 2026

Angela C Brown-Pettigrew, USPTO Patent Examiner

Listed by the USPTO as BROWN-PETTIGREW, ANGELA C

Tech Center 4100 • Art Units: 1621 1629 1643 1700 1711 1761 4100 4161

This examiner grants 47% of resolved cases

Analysis

BROWN-PETTIGREW, ANGELA C handles cases in art unit 1621 and tech center 4100. The profile records 341 resolved cases, an allowance rate of 47.2%, an interview lift of 40.0%, and a median time to allowance of 981 days. The allowance result supports careful preparation of novelty and obviousness positions, while the interview figure indicates that direct engagement may be a meaningful component of prosecution strategy for this docket.

The listed companies are Henkel AG & Co. KGaA, Nouryon Chemicals International B.V., and Rohm And Haas Company. SCULLY SCOTT MURPHY & PRESSER, PC is the only leading firm shown. Counsel can use the company list to identify relevant chemical-technology context and the firm listing to locate a focused prosecution reference. The median timeline supports planning for continued examination activity and business deadlines.

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

Performance Statistics

47.2%
Allow Rate
-12.8% vs TC avg
356
Total Applications
+40.0%
Interview Lift
981
Avg Prosecution Days
Based on 341 resolved cases, 2023–2026

Rejection Statute Breakdown

3.4%
§101 Eligibility
13.2%
§102 Novelty
45.0%
§103 Obviousness
26.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18926742 PARTICULATE FABRIC TREATMENT COMPOSITION WITH AMINO ACID CHLORINE SCAVENGER Non-Final OA Henkel AG & Co. KGaA
18878368 MULTIFUNCTIONAL N-OXIDE HYDROTROPES, CLEANING FORMULATIONS CONTAINING THEM AND USE THEREOF Non-Final OA NOURYON CHEMICALS INTERNATIONAL B.V.
19108595 AQUEOUS LIGHT DUTY LIQUID DETERGENT FORMULATION Non-Final OA Rohm and Haas Company

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Frequently Asked Questions

What is examiner Angela C Brown-Pettigrew's allowance rate?

47.2% of resolved applications examined by Angela C Brown-Pettigrew were allowed (341 resolved cases), compared with 46.0% across Art Unit 1621 over the last five years.

Does an interview help with examiner Angela C Brown-Pettigrew?

This examiner's interview lift is +40.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Angela C Brown-Pettigrew take to allow a patent?

Applications allowed by Angela C Brown-Pettigrew took 981 days on average from filing to allowance.

Which art unit does examiner Angela C Brown-Pettigrew work in?

Angela C Brown-Pettigrew examines applications in Art Unit 1621 in Tech Center 4100.

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