Ervin Cohen & Jessup, LLP
Patent reexamination counsel·4 ex parte reexams
Ervin Cohen & Jessup, LLP has served as patent-owner counsel in 4 USPTO ex parte reexaminations, with 2 currently open. The firm most often represents Hongjia Wang and Wang Hongjia. 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 |
|---|---|---|---|---|---|
| 90/016,291 | May 15, 2026 | 11,007,584 | TWIST DRILL | — | Open |
| 90/016,299 | May 15, 2026 | 11,554,424 | TWIST DRILL | Hongjia Wang | Open |
| 90/019,180 | May 8, 2023 | 11,007,583 | TWIST DRILL | Wang Hongjia | Closed |
| 90/019,121 | Oct 12, 2022 | 11,007,583 | TWIST DRILL | Hongjia Wang | Closed |
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