Cantor Colburn, LLP
Patent reexamination counsel·6 ex parte reexams
Cantor Colburn, LLP has served as patent-owner counsel in 6 USPTO ex parte reexaminations, with 2 currently open. The firm most often represents UPL Ltd., Cpc Patent Technologies Pty Ltd., and CPC Patent Technologies, Pty Ltd.. 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 (6)
| Control # | Filed | Patent | Title | Owner | Status |
|---|---|---|---|---|---|
| 90/019,830 | Jan 23, 2025 | 11,555,046 | CRYSTALLINE FORM OF L-GLUFOSINATE AMMONIUM SALT AND PROCESS FOR PRODUCTION THEREOF | UPL Ltd. | Closed |
| 90/019,617 | Aug 9, 2024 | 9,665,705 | REMOTE ENTRY SYSTEM | Cpc Patent Technologies Pty Ltd. | Open |
| 90/019,618 | Aug 9, 2024 | 9,269,208 | REMOTE ENTRY SYSTEM | CPC Patent Technologies, Pty Ltd. | Open |
| 90/013,501 | May 4, 2015 | 7,051,450 | PORTABLE COORDINATE MEASUREMENT MACHINE | FARO Technologies Inc. | Closed |
| 90/013,267 | Jun 24, 2014 | 7,194,281 | METHOD AND APPARATUS FOR SYNCHRONIZATION CONTROL OF FORWARD LINK TRANSMITTING POWER DURING SOFT HANDOFF IN WIRELESS COMMUNICATION SYSTEMS | ZTE Corporation | Closed |
| 90/012,418 | Sep 12, 2012 | 7,415,812 | APPARATUS AND METHOD FOR PACKING SMOKING ARTICLES | British American Tobacco (Investments) Limited | Closed |
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