Nippon Steel Corporation
Patent owner in reexamination·1 ex parte reexams
Nippon Steel Corporation's patents have been the subject of 1 USPTO ex parte reexamination. 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
112
Outcome track record
How reexams of this owner's patents resolve: claims confirmed, amended, mixed, or fully canceled.
- Certificate outcome split across every bucket
- Claim-survival rate
Defense metrics
Claim-survival rate, average pendency, and the open/closed split across every reexam of this owner's patents.
- Survival rate of closed proceedings
- Average pendency in months
Challengers & examiners
Which requesters most often challenge this owner's patents, and which examiners decide them.
- Top requesters
- Most frequent examiners
Recent reexaminations (1)
| Control # | Filed | Patent | Title | Requester | Status |
|---|---|---|---|---|---|
| 90/012,482 | Sep 10, 2012 | 5,261,972 | PROCESS FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL STRIP HAVING HIGH MAGNETIC FLUX DENSITY | — | Closed |
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