Idemitsu Kosan Co. Ltd.
Ex parte reexamination requester·1 ex parte reexams
Idemitsu Kosan Co. Ltd. has requested 1 USPTO ex parte reexamination. It most often challenges patents owned by Cheil Industries Inc.. 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 challenged
Outcome track record
How this requester's challenges resolve: claims confirmed, amended, mixed, or fully canceled.
- Certificate outcome split across every bucket
- Share of challenges that canceled claims
Challenge metrics
Cancellation rate, average pendency, and the open/closed split across every reexam this requester has filed.
- Outcome rate of closed challenges
- Average pendency in months
Examiners & defense counsel
Which examiners decide this requester's challenges, and which firms defend the targeted patents.
- Most frequent examiners
- Top opposing counsel
Recent reexaminations (1)
| Control # | Filed | Patent | Title | Owner | Status |
|---|---|---|---|---|---|
| 90/013,408 | Dec 31, 2014 | 8,890,126 | COMPOUND FOR OPTOELECTRONIC DEVICE, ORGANIC LIGHT EMITTING DIODE INCLUDING THE SAME, AND DISPLAY INCLUDING THE ORGANIC LIGHT EMITTING DIODE | Cheil Industries Inc. | Closed |
See the full reexam picture for Idemitsu Kosan Co. Ltd.
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