The company that owns the rights to CS Lewis' work – CS Lewis Ltd – claims an Edinburgh-based man has breached cybersquatting regulations by acquiring the domain.

Richard Saville-Smith bought the domain as a birthday present for his 11-year-old son, a fan of CS Lewis' The Chronicles of Narnia series, in September 2006 - after the expiration of the three-month 'sunrise period'. Sunrise periods are put in place as soon as new top-level domains are released as a way to allow companies and organisations to register domains featuring their trademarks before they're made available to a wider audience.

The Guardian reports that a 128-page dossier urging Saville-Smith to hand over, compiled by the New York lawyers Baker & McKenzie, was delivered to his Edinburgh home earlier this month. The domain has been frozen ahead of a possible hearing at the World Intellectual Property Organisation headquarters in Geneva.

"We were amazed the domain name was still free and snapped it up for Comrie, who is a big fan of the Narnia books," Saville-Smith told The Guardian. "The people from CS Lewis must have realised they missed it, and now they want it back."

Released two years ago, .mobi domains are designed for websites optimised for mobile phone browsers.