Cozen O'Connor
Patent reexamination counsel·4 ex parte reexams
Cozen O'Connor has served as patent-owner counsel in 4 USPTO ex parte reexaminations, with 1 currently open. The firm most often represents Volterra Semiconductor LLC, WJLP Company Inc., and Jobra Metall GmbH. 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
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 (4)
| Control # | Filed | Patent | Title | Owner | Status |
|---|---|---|---|---|---|
| 90/016,115 | Apr 1, 2026 | 11,183,985 | INDUCTIVE-CAPACITIVE FILTERS AND ASSOCIATED SYSTEMS AND METHODS | WJLP Company Inc. | Open |
| 90/019,037 | Nov 24, 2021 | 7,772,955 | METHOD FOR MAKING MAGNETIC COMPONENTS WITH N-PHASE COUPLING, AND RELATED INDUCTOR STRUCTURES | Volterra Semiconductor LLC | Closed |
| 90/019,029 | Oct 26, 2021 | 7,525,408 | METHOD FOR MAKING MAGNETIC COMPONENTS WITH N-PHASE COUPLING, AND RELATED INDUCTOR STRUCTURES | Volterra Semiconductor LLC | Closed |
| 90/013,362 | Oct 6, 2014 | 6,712,683 | BACKING PLATE FOR ABRASIVE FLAP WHEELS | Jobra Metall GmbH | Closed |
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