London, Aug 6 - American chat show queen Oprah Winfrey is facing a staggering $1 trillion legal battle over allegations that she passed another author's work off as her own.

The TV titan, one of America's highest earning celebrities, is being sued by author Damon Lloyd Goffe who accuses the media mogul and her production company Harpo Inc. of plagiarising his book 'A Tome of Poetry' in her internet published work 'Pieces of my Soul', reports imdb.com.

In a copyright infringement suit filed at the District of Columbia Court July 31, Goffe insists Winfrey even admitted she used his original works in 2008.

'In April 2008 Oprah confessed to seizing original works of authorship,' he wrote in the documents.

Goffe and his legal team are seeking the huge amount in damages, claiming that as Winfrey sold an alleged 650 million copies of the book online for $20 a time, he is owed $1.2 trillion.

However, Goffe admits that the website, which sold Winfrey's work, is no longer available.