The Dobrusin Law Firm, P.C.
Patent reexamination counsel·2 ex parte reexams
The Dobrusin Law Firm, P.C. has served as patent-owner counsel in 2 USPTO ex parte reexaminations. The firm most often represents Nocil Limited and CFS BUHL GMBH. 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 |
|---|---|---|---|---|---|
| 90/015,136 | Oct 17, 2022 | 9,102,585 | EFFICIENT CONTINUOUS PROCESS FOR MANUFACTURING OF 4-AMINODIPHENYLAMINE FROM ANILINE AND NITROBENZENE | Nocil Limited | Closed |
| 90/013,462 | Mar 5, 2015 | 7,413,070 | POSITIONING SYSTEM | CFS BUHL GMBH | Closed |
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- Banner & Witcoff, Ltd.34 reexams · 2 pending
See the full reexam picture for The Dobrusin Law Firm, P.C.
Certificate outcomes, pendency, and the parties and examiners behind these cases. Free to sign up.