Amster, Rothstein & Ebenstein, LLP
Patent reexamination counsel·3 ex parte reexams
Amster, Rothstein & Ebenstein, LLP has served as patent-owner counsel in 3 USPTO ex parte reexaminations, with 1 currently open. The firm most often represents Network-1 Technologies Inc., Umbrella Baby LLC, and Sienna LLC. 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 (3)
| Control # | Filed | Patent | Title | Owner | Status |
|---|---|---|---|---|---|
| 90/019,459 | Apr 1, 2024 | 8,010,988 | USING FEATURES EXTRACTED FROM AN AUDIO AND/OR VIDEO WORK TO OBTAIN INFORMATION ABOUT THE WORK | Network-1 Technologies Inc. | Open |
| 90/014,199 | Sep 10, 2018 | 8,636,158 | DUAL CHAMBER NURSING BOTTLE | Umbrella Baby LLC | Closed |
| 90/012,989 | Sep 12, 2013 | 7,152,998 | ASSEMBLABLE STRING TREE | Sienna LLC | Closed |
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