Patents    (DP)

As far as we know, there are no patents related to the NLS system or the Augment system.    (DQ)

Lawsuits    (DR)

In 2000, British Telecom sued Prodigy over a patent that BT owned, which they claimed would cover the use of hyperlinks. They eventually lost the case. The court decision did not decide the case based on prior art.    (DS)