Have the Tree Lounge Advantage patents expired?


I was wondering if the Tree Lounge Advantage patents (e.g., US 5,954,158) are available to be purchased? I know the company has since closed. Have they expired or are they still valid? Any help would be great.


Posted 2015-11-03T08:46:56.190

Reputation: 21



On the Google Patents page for this patent, look under Legal Events and you will see:

Nov 13, 2007    FP  Expired due to failure to pay maintenance fee
Effective date: 20070921

The patent is expired since September 9, 2007.

If you are interested in the detailed history of the patent, refer to the USPTO Public Pair database.


Posted 2015-11-03T08:46:56.190

Reputation: 1 775