Facebook founder and chief executive officer Mark Zuckerberg is expected to appear in a Dallas courtroom on Tuesday in order to testify in an ongoing lawsuit involving the virtual reality firm Oculus. The $2 billion lawsuit was to determine whether Oculus stole the technology behind its VR headsets.

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The lawsuit was filed by ZeniMax Media in 2014. The respondents are Oculus and its co-founder Palmer Luckey. ZeniMax's legal counsel later modified the lawsuit in order to include Facebook. ZeniMax Media is the owner of Texas-based video game developer id Software, according to Wired.

In 2014, Facebook acquired Oculus for $2 billion and subsequently merged the then budding firm into the social networking giant's Menlo Park headquarters. The lawsuit claimed that Facebook acquired Oculus despite the fact that the company is fully aware of ongoing allegations of theft against Oculus.

In a statement acquired by Mercury News, an Oculus spokesperson commented on the lawsuit saying, "We're disappointed that another company is using wasteful litigation to attempt to take credit for technology that it did not have the vision, expertise, or patience to build."

The lawsuit also include former John Carmack and Oculus executive Brendan Iribe. Carmack was a former ZeniMax employee who left in 2013 in order to join Oculus as chief technology officer. Moreover, ZeniMax claimed that Carmack violated certain confidentiality clauses while he was still with the company, along with other violations of his employee agreement.

ZeniMax said that the company can prove that Oculus stored the company's virtual trade secrets and then destroyed evidence in order to cover their tracks.

TagsFacebook, Mark Zuckerberg, Facebook news, Oculus, Oculus Rift, VR, Virtual Reality, zenimax media, zenimax