The author said They allegedly copied it for the movie and threatened to sue him if he pursued his own film or television spinoffs. Ackerman is asking the court for money damages equaling at least 6% of the film's $80 million production budget.
The lawsuit said that Ackerman sent a pre-publication copy of the book to the Tetris Company. The company refused to license its intellectual property for projects related to his book, dissuading producers who were interested in adapting it, and sent him a "strongly worded cease and desist letter."
Source: reuters