LEADING THE DAY: Samsung has said it will take counter action against Apple, which filed a lawsuit against the Korean electronics manufacturer on Monday, the AP reported. Apple said that Samsung Galaxy line devices “slavishly copy” Apple products. In a statement, Samsung said that it will respond to Apple’s legal action with its own.

Samsung is one of Apple’s major suppliers, and provides the memory chips for Apple’s iPad tablet.

Apple has also sought to have its iTunes antitrust suit dropped in California, Bloomberg reported. The suit examines the antitrust implications of iTunes policies.

Seagate buys Samsung drives division: In a $1.35 billion stock and cash deal, Seagate has agreed to buy Samsung’s drive business. The deal is seen as a move to be competitive with Western Digital, which acquired Hitachi Global Storage Technologies last month.

As part of the agreement, Seagate will supply Samsung with disk drives for consumer electronics and Samsung will give Seagate products for its solid-state drives. The deal is expected to close by the end of 2011.

Yahoo keeping search queries: Yahoo said it will begin keeping search queries for 18 months in a post on its policy blog. The move is a complete policy reversal, the AP reported, as Yahoo was the first search engine to announce it would anonymize user data after 90 days. The search engine said it will consider keeping other consumer data for longer periods of time as well. The policy brings Yahoo’s policies in line with Google’s search log policies.

Microsoft, i4i in court: On Monday, the Supreme Court heard arguments from Microsoft and i4i, a Toronto-based company that sued Microsoft over a patent regarding a feature in Microsoft Word. The case could change the standard by which a jury determines the validity of a patent. Microsoft argues that Congress intended for juries to look for a “preponderance” of evidence instead of the more stringent “clear and convincing” standard of evidence.

Wal-Mart buys social media platform: Wal-Mart paid $300 million to acquire Kosmix, reports All Things Digital. Kosmix runs a social media platform that filters the content of social networks. The company will work with the retailer’s @WalmartLabs team on Wal-Mart’s efforts in expanding its social networking and mobile applications, according to a Wal-Mart release announcing the deal.