KPPB LLP
Patent reexamination counsel·5 ex parte reexams
KPPB LLP has served as patent-owner counsel in 5 USPTO ex parte reexaminations, with 2 currently open. The firm most often represents Wilus Institute of Standards and Technology Inc. and Sonos, Inc.. 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 (5)
| Control # | Filed | Patent | Title | Owner | Status |
|---|---|---|---|---|---|
| 90/015,925 | Jan 30, 2026 | 12,166,587 | WIRELESS COMMUNICATION TERMINAL AND WIRELESS COMMUNICATION METHOD FOR MULTI-USER CONCURRENT TRANSMISSION | Wilus Institute of Standards and Technology Inc. | Open |
| 90/015,638 | Oct 28, 2025 | 10,567,047 | WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION TERMINAL FOR SIGNALING MULTI-USER PACKET | Wilus Institute of Standards and Technology Inc. | Open |
| 90/015,538 | Sep 23, 2025 | 10,305,638 | WIRELESS COMMUNICATION TERMINAL AND WIRELESS COMMUNICATION METHOD FOR MULTI-USER CONCURRENT TRANSMISSION | Wilus Institute of Standards and Technology Inc. | Closed |
| 90/015,488 | Aug 29, 2025 | 10,931,396 | AGGREGATED-MPDU, METHOD FOR TRANSMITTING RESPONSE FRAME THERETO, AND WIRELESS COMMUNICATION TERMINAL USING SAME | Wilus Institute of Standards and Technology Inc. | Closed |
| 90/013,497 | Apr 28, 2015 | D559,197 | CONTROL STRIP FOR ELECTRONIC APPLIANCES | Sonos, Inc. | Closed |
Other reexam law firms
- Knobbe, Martens, Olson & Bear, LLP78 reexams · 10 pending
- Fish & Richardson P.C.68 reexams · 7 pending
- Sterne, Kessler, Goldstein & Fox P.L.L.C.63 reexams · 8 pending
- Heim, Payne & Chorush, LLP36 reexams · 28 pending
- Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.34 reexams · 1 pending
- Banner & Witcoff, Ltd.34 reexams · 2 pending
See the full reexam picture for KPPB LLP
Certificate outcomes, pendency, and the parties and examiners behind these cases. Free to sign up.