Facebook big ambitions in the nascent virtual reality industry could be threatened by a court order that would prevent it from using critical software code another company claims to own, according to legal and industry experts. Last Thursday, video game publisher ZeniMax Media asked a Dallas federal judge to issue an order barring Facebook unit Oculus from using or distributing the disputed code, part of the software development kit that Oculus provides to outside companies creating games for its Rift VR headset. A decision is likely a few months away, but intellectual property lawyers said ZeniMax has a decent chance of getting the order, which would mean Facebook faces a tough choice between paying a possibly hefty settlement or fighting on at risk of jeopardizing its position in the sector. For now, Facebook is fighting on. Oculus spokeswoman Tera Randall said last Thursday the company would challenge a $500 million jury verdict on Feb. 1 against Oculus and its co-founders Palmer Luckey and Brendan Iribe for infringing ZeniMax's copyrighted code and violating a non-disclosure agreement. Randall said Oculus would possibly file an appeal that would "allow us to put this litigation behind us." She did not respond to a request for comment for this article. An injunction would require Oculus, which Facebook acquired for $3 billion in 2014, to stop distributing the code to developers or selling those games that use it. Such a court order "would put a huge stumbling block in front" of Oculus, said Stephanie Llamas, an analyst with gaming market research firm SuperData. It would offer the company's rivals in the new market, which include HTC, Sony Corp, Alphabet Inc and others an "important opportunity for them to become first movers." Sales of the Rift itself would not be barred, but Llamas, said a lack of available titles could hinder Facebook's offering relative to HTC's Vive headset and Sony's PlayStation VR. That market is relatively small at the moment - sales of VR hardware and software totaled $2.7 billion in 2016 - and mainly limited to gaming. But Facebook chief executive Mark Zuckerberg has predicted the technology "will become a part of daily life for billions of people," revolutionizing social media, entertainment and medicine.