A federal judge in Chicago was set to issue a verdict on Tuesday in a peculiar civil trial over a celebrated Scottish-born artist's insistence that he did not paint a landscape work that was once valued at more than $10 million.

Some of Peter Doig's paintings have even sold for more than $20 million.

The owner of the disputed work, a prison official from Canada, sued in a US court for millions in damages after its projected sales price plummeted when 57-year-old Doig said he did not paint it.