ExamPat

WHDA, LLP

Patent reexamination counsel·6 ex parte reexams

WHDA, LLP has served as patent-owner counsel in 6 USPTO ex parte reexaminations. The firm most often represents Kaneka Corporation, DIC Corporation, and Kanegafuchi Kagaku Kogyo Kabushiki Kaisha. 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

2
14
1
15
1
18
1
19
1
20

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 (6)

Control #FiledPatentTitleOwnerStatus
90/014,554Jul 29, 202010,723,952POLYMERIZABLE COMPOUND AND OPTICALLY ANISOTROPIC BODYDIC CorporationClosed
90/014,410Nov 12, 20197,691,961Polyimide Film and Use ThereofKaneka CorporationClosed
90/014,076Jan 30, 20186,264,866METHOD FOR PRODUCING POLYIMIDE FILMKanegafuchi Kagaku Kogyo Kabushiki KaishaClosed
90/013,636Nov 23, 20157,910,340Process for Producing Coenzyme Q10Kaneka CorporationClosed
90/013,299Jul 29, 20145,645,017Coupling for the Transmission of Alternating Torques—Closed
90/013,298Jul 23, 20145,507,254Variable Phase Coupling For the Transmission of Alternating Torques—Closed

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