ExamPat

Banner & Witcoff, Ltd.

Patent reexamination counsel·29 ex parte reexams

Banner & Witcoff, Ltd. has served as patent-owner counsel in 29 USPTO ex parte reexaminations, with 3 currently open. The firm most often represents Maxell Ltd., Comcast IP Holdings I LLC, and The Johns Hopkins University. 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

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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 (showing 25 of 29)

Control #FiledPatentTitleOwnerStatus
90/016,422Jun 26, 2026—MULTI-IN-ONE CHARGING DEVICE—Open
90/015,399Jul 21, 202510,039,483FLUID DIVERSION MECHANISM FOR BODILY-FLUID SAMPLINGMagnolia Medical Technologies Inc.Open
90/019,177Mar 22, 202310,039,483FLUID DIVERSION MECHANISM FOR BODILY-FLUID SAMPLINGMagnolia Medical Technologies Inc.Open
90/014,752May 24, 20219,578,943HAIR STRAIGHTENING BRUSHGuy A. Shaked Investments Ltd.Closed
90/014,678Feb 12, 20217,116,438TERMINAL FOR INFORMATION PROCESSINGMaxell Ltd.Closed
90/014,673Feb 3, 20216,430,498PORTABLE TERMINAL WITH THE FUNCTION OF WALKING NAVIGATIONHitachi Ltd.Closed
90/014,661Jan 27, 20216,580,999PORTABLE TERMINAL WITH THE FUNCTION OF WALKING NAVIGATIONMaxell Ltd.Closed
90/014,662Jan 27, 20216,748,317PORTABLE TERMINAL WITH THE FUNCTION OF WALKING NAVIGATIONMaxell Ltd.Closed
90/014,651Jan 12, 202110,129,590DISPLAY APPARATUS AND VIDEO PROCESSING APPARATUSMaxell Ltd.Closed
90/014,638Dec 23, 20208,982,086INFORMATION PROCESSING APPARATUSMaxell Ltd.Closed
90/014,641Dec 23, 202010,176,848RECORDING AND REPRODUCING APPARATUS AND METHOD THEREOFMaxell Ltd.Closed
90/014,640Dec 23, 20206,580,999PORTABLE TERMINAL WITH THE FUNCTION OF WALKING NAVIGATIONMaxell Ltd.Closed
90/014,639Dec 23, 20206,748,317PORTABLE TERMINAL WITH THE FUNCTION OF WALKING NAVIGATIONMaxell Ltd.Closed
90/014,632Dec 18, 20206,408,193CELLULAR TELEPHONEMaxell Ltd.Closed
90/014,631Dec 15, 20207,203,517MOBILE COMMUNICATION TERMINAL DEVICEMaxell Ltd.Closed
90/014,628Dec 10, 20208,339,493ELECTRIC CAMERAMaxell Ltd.Closed
90/014,412Nov 18, 20198,302,374CUT RESIST YARN, A PROCESS FOR PRODUCING THE YARN AND PRODUCTS CONTAINING THE YARNDsm IP Assets B.V.Closed
90/014,028Oct 10, 20178,558,687REMOTE LOCATION MONITORINGLa Crosse Technology Ltd.Closed
90/013,960May 22, 20176,947,882Regionally Time Multiplexed Emulation SystemMentor Graphics CorporationClosed
90/013,824Dec 29, 20166,240,376Method and Apparatus for Gate-Level Simulation of Synthesized Register Transfer Level Designs with Source-Level DebuggingMentor Graphics CorporationClosed
90/012,894Jun 17, 20136,440,706Digital AmplificationThe Johns Hopkins UniversityClosed
90/012,895Jun 17, 20137,824,889Digital AmplificationThe Johns Hopkins UniversityClosed
90/012,896Jun 17, 20137,915,015DIGITAL AMPLIFICATIONThe Johns Hopkins UniversityClosed
90/012,863May 10, 20136,873,694TELEPHONY NETWORK OPTIMIZATION METHOD AND SYSTEMComcast IP Holdings I LLCClosed
90/012,859May 6, 20138,189,565METHOD AND APPARATUS FOR ACCESSING COMMUNICATION DATA RELEVANT TO A TARGET ENTITY IDENTIFIED BY A NUMBER STRINGComcast IP Holdings I LLCClosed

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See the full reexam picture for Banner & Witcoff, Ltd.

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