A High Court judge branded arguments in the Duchess of Sussex’s legal case against the Mail on Sunday as "tortuous". Lord Justice Warby ruled that the Duchess, 39, won her copyright claim after a letter sent by former aide Jason Knauf "emphatically" denying ownership of a letter she wrote to her father rendered the newspaper’s case "unreal". In a ruling explaining his decision, the judge noted that it was his eighth judgment in the case and appeared to criticise both sides about the lengthy courtroom tussles on every point. Summarising a long-winded argument about the misuse of private information claim, he referred to one response as "the final twist (so far) in this tortuous story". The Duchess successfully sued Associated Newspapers for breach of privacy and copyright in relation to the publication of five articles featuring extracts of the letter sent to her estranged father, Thomas Markle, in February 2019. Earlier this year she won a summary judgment - a legal step negating the need for witness evidence - in relation to the privacy claim and the bulk of the copyright claim. Lord Justice Warby last week awarded a summary judgment on the outstanding copyright claim. The Duchess’s legal team applied for indemnity or higher costs after they were copied in on a series of emails sent from the Mail on Sunday’s legal team to Mr Knauf’s lawyers in error. Meghan, 39, had revealed that when drafting the letter to her estranged father, Mr Knauf "provided feedback" in the form of "general ideas".