Williams Simons & Landis PLLC
Patent reexamination counsel·2 ex parte reexams
Williams Simons & Landis PLLC has served as patent-owner counsel in 2 USPTO ex parte reexaminations. The firm most often represents Estech Systems IP, LLC and Estech Systems, 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 (2)
| Control # | Filed | Patent | Title | Owner | Status |
|---|---|---|---|---|---|
| 90/015,227 | May 2, 2023 | 7,068,684 | QUALITY OF SERVICE IN A VOICE OVER IP TELEPHONE SYSTEM | Estech Systems IP, LLC | Closed |
| 90/014,804 | Jul 16, 2021 | 7,068,684 | QUALITY OF SERVICE IN A VOICE OVER IP TELEPHONE SYSTEM | Estech Systems, 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 Williams Simons & Landis PLLC
Certificate outcomes, pendency, and the parties and examiners behind these cases. Free to sign up.