Microsoft Corporation has asked European Union (EU) antitrust regulators to intervene in a patent dispute with Google Inc and Motorola Mobility Holdings Inc as it stepped up its battle against Google. Microsoft complained that Motorola Mobility was charging Microsoft too much for use of its patents in Microsoft products a week after the European Commission, the EU’s executive arm, and the US Justice Department approved Internet search leader Google’s $12.5 billion acquisition of mobile phone-maker Motorola. Google had pledged to license Motorola patents on fair and reasonable terms if the deal were allowed to go ahead in the week before EU approval for the deal, which is still being reviewed by China’s regulators. But Microsoft argued that “Motorola has refused to make its patents available at anything remotely close to a reasonable price” in a blog posted by its deputy general counsel Dave Heiner. As a result Heiner said Microsoft had filed a formal competition law complaint against Motorola Mobility and Google. “We have taken this step because Motorola is attempting to block sales of Windows PCs, our Xbox game console and other products,” he said in the blog. Heiner had initially named just Motorola Mobility in the blog post but in an update said the complaint also included Google. Heiner said Motorola had filed lawsuits in the United States and in Europe demanding Microsoft take its products off the market, or else remove their standards-based ability to play video and connect wirelessly. “Motorola is on a path to use standard essential patents to kill video on the Web, and Google, as its new owner, does not seem to be willing to change course,” Heiner said. Antoine Colombani, a spokesman for competition affairs at the EU Commission, said the regulator has received the complaint and will examine it. Neither Motorola nor Google commented on the specific allegations. Motorola Mobility spokeswoman Jennifer Erickson said Motorola had not received a copy of the complaint but was  “committed to vigorously defending its intellectual property.” Google dismissed the complaint as “just another example of their attempts to use the regulatory process to attack competitors.”