KDW Firm, PLLC
Patent reexamination counsel·4 ex parte reexams
KDW Firm, PLLC has served as patent-owner counsel in 4 USPTO ex parte reexaminations, with 2 currently open. The firm most often represents WPFY Inc., Maxell Ltd., and Hitachi Maxell Ltd.. 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 |
|---|---|---|---|---|---|
| 90/016,203 | Apr 21, 2026 | 8,593,580 | PROJECTION-TYPE DISPLAY APPARATUS | Maxell Ltd. | Open |
| 90/015,879 | Jan 12, 2026 | 9,547,226 | LIGHT SOURCE DEVICE AND PROJECTION-TYPE IMAGE DISPLAY DEVICE | Hitachi Maxell Ltd. | Open |
| 90/012,085 | Jan 9, 2012 | 7,465,878 | Indicia-Coded Electrical Cable | WPFY Inc. | Closed |
| 90/012,084 | Jan 9, 2012 | 6,825,418 | Indicia-Coded Electrical Cable | WPFY Inc. | Closed |
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