US-based Microsoft is suing high-tech manufacturer Kyocera for patent infringement over technology used in the Japanese company's cellular phones.
US handset maker Motorola is taking aim at the Blackberry with a new smartphone designed for business users, the "Droid Pro".
The judge in a massive smartphone patent case reprimanded Samsung for releasing excluded evidence on Friday but rejected a bid by Apple to order a verdict in the case.
Chinese telecom equipment maker ZTE has rejected charges by its bigger rival Huawei Technologies, which is suing ZTE in three European countries for alleged patent and trademark infringements.
US computer chip company Broadcom filed a patent infringement suit on Monday against Emulex, two months after dropping a hostile takeover offer for its rival.
The world's leading mobile phone maker Nokia said Tuesday it was filing a fresh complaint against Apple for patent infringement in "virtually all" of Apple's devices.
Smartphone titan HTC Corp. on Thursday ramped up its patent war with Apple with the help of ammunition provided by Google, the force behind Android mobile software.
Yahoo! filed suit against Facebook in a California court on Monday accusing the social networking giant of infringing on 10 patents held by the Internet pioneer.
A US federal court has barred the sale of Samsung's new Galaxy Tab 10.1 tablet computer, siding with Apple in a bitter dispute between the two tech giants over alleged patent infringement.
Semiconductor maker Marvell Technology Group said Wednesday it has agreed to pay $750 million to settle a long-running patent suit brought by Carnegie Mellon University.