Skyhook Wireless, a manufacturer of location software for wireless smart phones, filed a pair of lawsuits against Google on Wednesday that accuse the web search giant of patent infringement and of interference in a contract arrangement between Skyhook and Motorola that induced Motorola to ship Android cell phones without Skyhook’s location software. The dispute spotlights the nascent, but fast-growing market for wireless location-based services that use GPS or Wi-Fi signals to locate mobile phone users and that are capable of offering mobile ads that are targeted toward the subscribers’ exact location at any given time. The interference suit, filed with the Massachusetts Superior Court, concerns a September 2009 contract between Skyhook and Motorola through which Motorola agreed to launch a series of smart phones, powered with Google’s Android operating system, that feature Skyhook’s XPS location software. After Skyhook invested $1.5 million in the arrangement, Google objected to the contract on grounds that Skyhook’s software was incompatible with the Android platform. According to the complaint, Google then contacted Motorola co-CEO Sanjay Jha to order a “stop ship” of the Andoidpowered phones unless Motorola installed Google’s wireless location software on the handsets in question. Meanwhile, the patent infringement suit filed, in a federal court, seeks injunctive relief and unspecified monetary damages for alleged violations of four Skyhook patents that relate to the company’s wireless location-based service technology. That lawsuit claims that after Google licensed the Skyhook patents on a trial basis in 2005, Google sought data from the Skyhook database that Skyhook refused to provide. The patent complaint further states that Google unveiled its own location service software shortly thereafter. Officials of Google and Motorola offered no comment.