An employee of Samsung Electronics demonstrates Samsung's Galaxy Tab tablet during a photo opportunity at a showroom of the company in Seoul January 18, 2011. Reuters/Lee Jae-WonApple sued rival Samsung Electronics claiming that Samsung’s Galaxy line of mobile phones and tablet “slavishly” copies the iPhone and iPad, according to court papers. The lawsuit, filed on Friday, alleges Samsung copied the look, product design and product user interface of Apple’s products. Samsung violated Apple’s patents and trademarks, the suit alleges.

Twitter is in talks to buy TweetDeck for around $50 million, The Wall Street Journal reported. TweetDeck is an add-on program that helps Twitter users view and manage their tweets and messages on other services such as those offered by Facebook and Foursquare. Twitter has allowed advertisers’ “promoted tweets”, that show up when users perform searches on Twitter, to appear on TweetDeck as part of a revenue-sharing agreement, The WSJ wrote.

Texas Instruments’s quarterly earnings missed Wall Street expectations by a penny as expenses rose after two of its Japanese factories were damaged in the country’s largest-ever earthquake. The company, which plans to buy analog chip maker National Semiconductor Corp for $6.5 billion, said one of its factories will “soon” resume full production, and added that it expects a strong second half.

Match.com said it will begin checking users against the national sex offender registry, days after a class action lawsuit was filed by a woman allegedly sexually assaulted by a man she met on the dating site.

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