Microsoft's Windows 95 rollout presented the most challenges in the company's history, leading to several last-minute changes to technical features that would no longer support a rival software maker's word processor, Bill Gates has testified in a $US1 billion ($A1.01 billion) antitrust lawsuit filed by the creator of WordPerfect.

South Korea's Samsung Electronics says it has filed a complaint in France against its US rival Apple for infringement of three technology patents.

Motorola's mobile phone subsidiary has filed a lawsuit against Microsoft alleging the world's largest software maker has infringed 16 of its patents in PC, mobile and server software, as well as Xbox products.

Oracle has filed a lawsuit against Google, charging that its Android phone software infringes Oracle patents and copyrights related to Java, Oracle said on Thursday.

Viacom's $1 billion copyright infringement lawsuit against Google's video-sharing site YouTube has been dismissed by the court, ending for now an acrimonious legal battle between the companies that has been going on for more than three years.

The Congressional International Anti-Piracy Caucus, a group of U.S. lawmakers concerned with copyright infringement, has listed The Pirate Bay and five other Web sites as "notorious" file-sharing sites.

The U.S. International Trade Commission will investigate complaints by Apple that Eastman Kodak violated its patents related to digital imaging devices and software, the latest dispute in a long-standing patent skirmish between the two companies.

HTC said it filed a complaint with the U.S. International Trade Commission charging Apple with infringing on five patents.

A Chicago-area woman is being sued for $50,000 by her landlord over a critical Tweet, the Chicago Sun-Times reported today. The landlord is quoted as describing itself as a "sue first and ask questions later kind of an organization." The tweet in question appeared to go to fewer than 20 friends of the sender.