Canadian film director and film producer James Cameron is already sick and tired of people who claim that he stole the concept of the hit movie “Avatar” and have finally decided to file legal docs.

According to reports, 57-year-old Cameron filed legal papers asking a judge to dismiss a $2 billion lawsuit that says the movie “Avatar” was not really his idea.

Previous reports have stated that science fiction writer Bryant Moore filed a lawsuit against James Cameron for $2.5 billion last December, claiming that Moore originally came up with the basic premise behind “Avatar” — and now, Cameron allegedly stole it.

In his lawsuit, Bryant Moore claims that James Cameron pilfered a lot of ideas from the screenplays made by Moore, which includes matriarch support of hero vs. heroine, reincarnation, spiritual connections to environment, unbreathable atmospheres, mist and bioluminescent flora/plant life.

Now, James Cameron has fired back from all the accusations, insisting that the Na’vi (the alien race in Avatar) are nothing like the Gavadeen Alliance or the Pollinators (the alien races found in Moore’s movies).

Cameron also added that nothing about the scripts of Bryant Moore have anything to do with “Avatar” — that they are totally different from beginning to end.

The “Avatar” director now wants a judge to dismiss the case of Bryant Moore as soon as possible so that he can already focus on making movies.