Nine years ago, a company called Worlds Incorporated filed a lawsuit against Activision Blizzard, claiming that Activision Blizzard infringed on patents owned by their company. However, Activision Blizzard's attorney said that Worlds' patent is an "abstract idea", not an actual thing, and its variability is not enough to obtain a legal patent right. After nine years, the judge of the U.S. District Court agreed with the lawyer.

In 2012, Worlds filed a complaint against Activision Blizzard, claiming that World of Warcraft and Call of Duty infringed their five patents, which World of Warcraft Classic Gold described various processes for organizing and displaying multiple player avatars in a shared 3D space. The owner of Worlds Incorporated described it as a "leading intellectual property developer and licensee of patents related to the 3D online virtual world." Worlds' attorneys asked the court to order Activision Blizzard to stop alleged patent infringement and let them give Worlds the economy Compensation.

In 2014, Worlds filed another lawsuit against Destiny publisher Bungie. Subsequently, Bungie asked the Patent Trial and Appeal Committee of the Patent Office to challenge Worlds' patent claims regarding the concept of shared multi-person 3D space.

This lawsuit was ultimately presided over by Denise Casper, Judge of the U.S. District Court. Because Bungie and Activision reached a developer-publisher agreement at the time, they were later appealed by the Massachusetts Federal District Court, but this led to several years of litigation, which was finally heard by the US District Court.

Casper said in the case that the world claimed the right to use general-purpose computers to adopt well-known filtering or crowd control methods, and means that they are ultimately used to display graphical results and generate views of the virtual world. These are not innate inventions or sufficient.' Transformation'. It is legally invalid to transform the abstract concept of protection into a patent-compliant WOW Classic Gold For Sale application. This lawsuit finally dismissed Worlds' infringement claims and agreed to the judgment request made by Activision Blizzard.

Worlds believes that they invented the idea of ​​a 3D multiplayer game, in which the server can directly "filter" the number of users visible to any particular player without specifying how it is implemented. They think this is an idea they discovered, so they claim to be a patent they own. However, in fact, Activision Blizzard believes that this is just an "abstract idea", not a substantive thing they own, so it is not enough to become their patent. After nine years, the judge finally agreed with Activision Blizzard.