Prosecution Insights
Last updated: October 26, 2026

Brian P Mruk, USPTO Patent Examiner

Listed by the USPTO as MRUK, BRIAN P

Tech Center 1700 • Art Units: 1611 1700 1711 1712 1761 1796

This examiner grants 74% of resolved cases

Analysis

MRUK, BRIAN P is assigned to Technology Center 1700 and Art Unit 1611. The profile covers 1335 resolved cases, an allowance rate of 74.2%, and a median time to allowance of 813 days. Interview lift is 28.1%. The extensive case record gives practitioners a broad base for studying prosecution behavior, and the timing figure indicates a median path to allowance of more than two years.

The listed companies are The Procter & Gamble Company, Henkel AG & Co. KGaA, and Ecolab USA Inc. The leading firms are BLANK ROME LLP, CANTOR COLBURN LLP, and HARNESS DICKEY (DETROIT). Applications handled by these organizations may offer useful examples for claim presentation and response sequencing. The interview measure supports proactive examiner communication, particularly where the applicant can use the meeting to narrow issues that may otherwise require repeated written exchanges.

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

Performance Statistics

74.2%
Allow Rate
+9.2% vs TC avg
1,390
Total Applications
+28.1%
Interview Lift
813
Avg Prosecution Days
Based on 1335 resolved cases, 2023–2026

Rejection Statute Breakdown

2.6%
§101 Eligibility
27.2%
§102 Novelty
32.6%
§103 Obviousness
20.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18675410 MASK CLEANING COMPOSITION, MASK CLEANING METHOD, AND METHOD OF MANUFACTURING DISPLAY APPARATUS Final Rejection Samsung Display Co., Ltd.
18612098 Maintenance Liquid And Method Of Maintenance Final Rejection SEIKO EPSON CORPORATION
18985688 CONSUMER PRODUCT COMPOSITIONS WITH PERFUME ENCAPSULATES Non-Final OA The Procter & Gamble Company
18983684 GRANULAR LAUNDRY DETERGENT COMPOSITION COMPRISING AN OPTICAL BRIGHTENER AND A HUEING DYE Non-Final OA The Procter & Gamble Company
18978202 LAUNDRY CARE ADDITIVE PARTICLES Non-Final OA The Procter & Gamble Company
18969361 WATER-SOLUBLE UNIT DOSE ARTICLE CONTAINING A CORE/SHELL CAPSULE Non-Final OA The Procter & Gamble Company
18894029 DETERGENT COMPOSITION COMPRISING DETERSIVE SURFACTANT AND GRAFT POLYMER Final Rejection The Procter & Gamble Company
18621236 ANTIMICROBIAL LIQUID DETERGENT COMPOSITION Final Rejection The Procter & Gamble Company
18429884 PERSONAL CLEANSING COMPOSITION SUBSTANTIALLY FREE OF ALKYL SULFATE OR ALKYL ETHER SULFATE TYPE OF SURFACTANTS Final Rejection The Procter & Gamble Company
18508369 WATER-SOLUBLE FILM AND WATER-SOLUBLE UNIT DOSE ARTICLE MADE THEREFROM Non-Final OA The Procter & Gamble Company
18312623 LAUNDRY DETERGENT COMPOSITION CONTAINING POLYALKYLENE OXIDE GRAFT COPOLYMER AND DYE TRANSFER INHIBITOR POLYMER Non-Final OA The Procter & Gamble Company
17958719 COMPOSITIONS COMPRISING CATIONIC POLY ALPHA-1,3-GLUCAN ETHERS Final Rejection The Procter & Gamble Company
17730540 LIQUID DETERGENT FORMULATION Final Rejection The Procter & Gamble Company
18575898 THICKENING AGENT FOR PERSONAL CARE CLEANSING COMPOSITIONS Final Rejection BASF SE
19103716 LAUNDRY COMPOSITION COMPRISING CARRAGEENAN, BENEFIT AGENT AND SODIUM CHLORIDE Non-Final OA Conopco, Inc., d/b/a UNILEVER
18288563 COMPOSITION Non-Final OA Conopco, Inc., d/b/a UNILEVER
19051704 THINNER COMPOSITION Non-Final OA DONGWOO FINE-CHEM CO., LTD.

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Frequently Asked Questions

What is examiner Brian P Mruk's allowance rate?

74.2% of resolved applications examined by Brian P Mruk were allowed (1,335 resolved cases), compared with 35.0% across Art Unit 1611 over the last five years.

Does an interview help with examiner Brian P Mruk?

This examiner's interview lift is +28.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Brian P Mruk take to allow a patent?

Applications allowed by Brian P Mruk took 813 days on average from filing to allowance.

Which art unit does examiner Brian P Mruk work in?

Brian P Mruk examines applications in Art Unit 1611 in Tech Center 1700 (Chemistry & Materials).

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