Darfon Electronics Corp.
Patent owner in reexamination·3 ex parte reexams
Darfon Electronics Corp.'s patents have been the subject of 3 USPTO ex parte reexaminations. Its patents are most often challenged by Greg (Cheng-Kang) Hsu and Douglas S. Weinstein. 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 requesters
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 (3)
| Control # | Filed | Patent | Title | Requester | Status |
|---|---|---|---|---|---|
| 90/012,750 | Jan 16, 2013 | 6,538,222 | PUSH BUTTON SWITCH APPARATUS AND METHOD OF ASSEMBLING THE SAME | Greg (Cheng-Kang) Hsu | Closed |
| 90/012,718 | Nov 9, 2012 | 8,253,598 | LIGHT-EMITTING KEYBOARD | — | Closed |
| 90/012,544 | Oct 26, 2012 | 6,860,612 | ILLUMINATED KEYBOARD SWITCH STRUCTURE | Douglas S. Weinstein | Closed |
See the full reexam picture for Darfon Electronics Corp.
Certificate outcomes, pendency, and the parties and examiners behind these cases. Free to sign up.