On April 21, 2011\u00a0Samsung Electronics Co. filed patent lawsuits against Apple for its\u00a0iPhone and\u00a0iPad devices in apparent retaliation over\u00a0Apple\u2019s own suit against Samsung.\u00a0 Samsung filed a lawsuit in the Seoul Central District Court,\u00a0Korea against Apple Inc. citing five patent infringements. Separately, Samsung filed a suit in a court in Tokyo, Japan citing two patent infringements, and in Manheim,\u00a0Germany citing three patent infringements. Samsung said the suits involved alleged infringements of patents mainly involving power reduction during data transmission, 3G technology for reducing errors during data transmission, and wireless data communication technology. Samsung said it is responding actively to the legal action taken against it in order to protect its intellectual property and to ensure its continued innovation and growth in the mobile communications business. Apple earlier filed a lawsuit against Samsung for alleged violation of its patents and trademarks over the iPhone and iPad.\u00a0 Apple claims that Samsung slavishly copied its iPhone and iPad designs. Apple\u2019s earlier suit and Samsung\u2019s countersuit has surprised many as both companies are engaged in business dealings, with Samsung producing chips and displays for Apple. \u00a0It is not unknown that Apple is the second-biggest client of Samsung and is expected to become its biggest client this year. Apple\u2019s aggressive move is most likely its answer to the growing popularity of Google\u2019s Android operating system. What do you think is behind Apple\u2019s move? Share your ideas in the comments section below.