NEW YORK ( TheStreet) -- In the latest patent suit between the two tech giants, Apple ( AAPL - Get Report) is suing in Japan to keep Samsung smartphones and tablets off the shelves due to alleged patent violations. Apple seeks to ban sales of the Galaxy S, the S II smartphones and the Galaxy Tab 7, accusing Samsung of copying its iPhone and iPad designs. Last month, patent dealings forced Samsung to delay the launch of its latest Galaxy Tab in Australia until a later court ruling, and the tablet was also banned from being sold in Germany. Shares of Apple fell 0.5% to $382.09 in pre-market trading on Thursday. In other patent-related news, HTC is suing Apple using patents it has obtained from Google ( GOOG - Get Report). According to the suit, HTC said Apple has infringed on eight mobile patents. Facebook's revenue in the first half of 2011 doubled to $1.6 billion, according to Reuters. Profit, meanwhile, came in at around $500 million. The results come as the company is reported to be preparing for an IPO next year. Yahoo! ( YHOO) is looking to hire bankers as it seeks to make changes to its business after ousting CEO Carol Bartz this week, according to the Wall Street Journal. The company could consider selling its Asian assets, a large acquisition and content partnerships, the report said. Shares of Yahoo! dropped 0.8% to $13.50 in pre-market trading on Thursday. Google has expanded its deals service, Google Offers, to five more cities: Austin, Texas; Boston; Washington; Denver and Seattle. The service is intended to compete with deals king Groupon as well as similar businesses launched by Amazon ( AMZN) and AT&T ( T). Last week, Facebook and Yelp said they were scaling back their efforts in the deals space. --Written by Olivia Oran in New York. >To follow the writer on Twitter, go to http://twitter.com/Ozoran. >To submit a news tip, send an email to: firstname.lastname@example.org.