ExamPat

Michael Best & Friedrich, LLP

Patent reexamination counsel·18 ex parte reexams

Michael Best & Friedrich, LLP has served as patent-owner counsel in 18 USPTO ex parte reexaminations. The firm most often represents Johnson Health Tech Co. Ltd., Milwaukee Electric Tool Corporation, and Modine Manufacturing Company. ExamPat indexes the full prosecution record for each proceeding, including office-action grounds, certificate outcomes, and downstream PTAB and Federal Circuit decisions.

Filings by year

7
12
1
13
4
14
1
18
1
19
1
24
3
25

Top patent owners represented

Outcome track record

How this firm's reexams resolve once a certificate issues: all claims confirmed, amended, mixed, or canceled.

  • Certificate outcome split across every bucket
  • Share of proceedings where claims survived

Practice metrics

Certificate rate, average pendency, and the open/closed split across the firm's full reexam docket.

  • Certificate rate of closed proceedings
  • Average pendency in months

Examiners & adversaries

Which examiners most often decide this firm's reexams, and which requesters most often challenge its patents.

  • Most frequent examiners
  • Top opposing requesters

Recent reexaminations (18)

Control #FiledPatentTitleOwnerStatus
90/019,989Jun 5, 2025—BATTERY OPERATED CHAIN SAW—Closed
90/019,912Apr 14, 20259,535,038REDUCTION OF AERATION INTERFERENCE IN AN ULTRASONIC FLUID SENSING SYSTEMSsi Technologies LLCClosed
90/019,831Jan 24, 20259,671,128AIR CONDITIONER HAVING ANGLED HEAT EXCHANGERSAiredale International Air Conditioning LimitedClosed
90/019,455Mar 22, 202411,557,456REAL-TIME DIRECT MEASUREMENT OF MECHANICAL PROPERTIES IN-SITU OF SCANNING BEAM MICROSCOPEUniversity of ConnecticutClosed
90/014,315Jun 14, 201910,179,007Reinforcing Slider For Surgical Hand ToolMedical Instrument Development Laboratories Inc.Closed
90/014,234Nov 9, 2018D810,925BREAST PUMP—Closed
90/013,372Oct 14, 20148,607,582CONTROLLING CHILLED STATE OF A CARGOJohnson Controls Technology CompanyClosed
90/013,305Aug 12, 20147,722,505STATIONARY EXERCISE APPARATUSJohnson Health Tech Co. Ltd.Closed
90/013,304Jul 25, 20148,092,349STATIONARY EXERCISE APPARATUSJohnson Health Tech Co. Ltd.Closed
90/013,097Jan 22, 20146,158,444INTERDENTAL CLEANER AND MANUFACTURING PROCESSCoronet-Werke GmbHClosed
90/013,013Oct 3, 20137,270,238VACUUM SEALABLE BAG APPARATUS AND METHODFoodfresh Technologies LLCClosed
90/012,737Dec 12, 20127,323,847Method and System of Charging Multi-Cell Lithium-Based BatteriesMilwaukee Electric Tool CorporationClosed
90/012,736Dec 12, 20127,176,654Method and System of Charging Multi-Cell Lithium-Based BatteriesMilwaukee Electric Tool CorporationClosed
90/012,644Nov 2, 20127,585,344Air Cleaner Airflow ShaperOreck Holdings LLCClosed
90/012,632Sep 14, 20127,811,348Air Cleaner Airflow ShaperOreck Holdings, LLCClosed
90/012,625Sep 14, 20128,245,491HEAT RECOVERY SYSTEM AND METHODModine Manufacturing CompanyClosed
90/012,294May 14, 20125,533,259METHOD OF MAKING AN EVAPORATOR OR EVAPORATOR/CONDENSERModine Manufacturing CompanyClosed
90/012,087Feb 16, 20127,119,277CONVERTIBLE ELECTRICAL DEVICE COVER AND METHOD FOR INSTALLING SAMETaymac CorporationClosed

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