Google 2011, "The Globe and Mail" reported that Google bid $900 million for 6000 Nortel Networks patents. On August 15, 2011, Google made its largest-ever acquisition to date when it announced that it would acquire Motorola Mobility for $12.5 billion subject to approval from regulators in the United States and Europe. In a post on Google's blog, Google Chief Executive and co-founder Larry Page revealed that the acquisition was a strategic move to strengthen Google's patent portfolio. The company's Android operating system has come under fire in an industry-wide patent battle, as Apple and Microsoft have sued Android device makers such
Google Slides changes to the presentation. Each editor's position is highlighted with an editor-specific color/cursor and the system regulates what users can do through varying degrees of permissions. Updates have introduced features using machine learning, including "Explore", offering suggested laouts and images for presentations, and "Action items", allowing users to assign tasks to other users. In September 2007, Google released a presentation program for Google Docs, which originated from the company's acquisition of Tonic Systems on April 17, 2007. In March 2010, Google acquired DocVerse, an online document collaboration company that allowed online collaboration between multiple users on Microsoft PowerPoint and other