Calfee, Halter & Griswold, LLP
Patent reexamination counsel·5 ex parte reexams
Calfee, Halter & Griswold, LLP has served as patent-owner counsel in 5 USPTO ex parte reexaminations, with 1 currently open. The firm most often represents Shenzhen Sunwell Industrial Co. Ltd., Gojo Industries Inc., and Owens Corning Intellectual Capital 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 (5)
| Control # | Filed | Patent | Title | Owner | Status |
|---|---|---|---|---|---|
| 90/015,748 | Jan 4, 2026 | D925,937 | CHAIR | Shenzhen Sunwell Industrial Co. Ltd. | Open |
| 90/019,639 | Aug 29, 2024 | D926,487 | SWIVEL CHAIR | Shenzhen Sunwell Industrial Co. Ltd. | Closed |
| 90/019,633 | Aug 26, 2024 | D925,937 | CHAIR | Shenzhen Sunwell Industrial Co. Ltd. | Closed |
| 90/014,863 | Sep 21, 2021 | 10,080,467 | FOAM DISPENSING SYSTEMS, PUMPS AND REFILL UNITS HAVING HIGH AIR TO LIQUID RATIOS | Gojo Industries Inc. | Closed |
| 90/012,653 | Sep 14, 2012 | 7,026,390 | EXTENDED BINDER COMPOSITIONS | Owens Corning Intellectual Capital LLC | Closed |
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