ExamPat

Mayer Brown, LLP

Patent reexamination counsel·12 ex parte reexams

Mayer Brown, LLP has served as patent-owner counsel in 12 USPTO ex parte reexaminations, with 6 currently open. The firm most often represents Pantech Corporation, Maxell Ltd., and Zest IP Holdings LLC. 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

1
12
3
14
5
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 (12)

Control #FiledPatentTitleOwnerStatus
90/015,582Oct 7, 202511,490,004MOBILE TERMINALMaxell Ltd.Open
90/015,583Oct 7, 202511,750,915MOBILE TERMINALMaxell Ltd.Open
90/015,519Oct 6, 20258,304,006CAPSULE WITH OUTER SEALING MATERIAL PRESSURIZED BY FLUID AND METHOD AND SYSTEM FOR USING SAMESociete Des Prosuits Nestle S.A.Open
90/019,726Nov 12, 202411,012,954APPARATUS AND METHOD FOR ESTABLISHING UPLINK SYNCHRONIZATION IN A WIRELESS COMMUNICATION SYSTEMPantech CorporationOpen
90/019,704Oct 15, 20249,854,545APPARATUS AND METHOD FOR ESTABLISHING UPLINK SYNCHRONIZATION IN A WIRELESS COMMUNICATION SYSTEMPantech CorporationOpen
90/019,641Aug 30, 202410,869,247SUPPORTING UPLINK TRANSMISSIONSPantech Wireless LLCClosed
90/019,559Jul 1, 20249,063,654TERMINAL APPARATUS AND METHOD FOR SUPPORTING SMART TOUCH OPERATIONDong Chan ShinOpen
90/019,553Jun 24, 20248,893,052SYSTEM AND METHOD FOR CONTROLLING MOBILE TERMINAL APPLICATION USING GESTUREPantech CorporationClosed
90/013,139Jan 28, 20146,299,447Dental Attachment AssemblyZest IP Holdings LLCClosed
90/013,138Jan 28, 20146,030,219Dental Attachment AssemblyZest IP Holdings LLCClosed
90/013,107Jan 8, 20146,992,218Method for Obtaining Aqueous Formulations of Oxidation-Sensitive Active PrinciplesPharmatop ScrClosed
90/012,606Sep 14, 20126,028,222NOVEL STABLE LIQUID PARACETAMOL COMPOSITIONS, AND METHOD FOR PREPARING SAMEScr PharmatopClosed

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