Myhrvold’s apparent contribution to the birthday book was a letter celebrating the New York financier along with graphic photos depicting sex acts and engorged genitalia of animals. In the letter, Myhrvold allegedly wrote that he took the photos on a recent trip to Africa.

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The spokesperson did not address Myhrvold’s note to Epstein in the birthday book or his inclusion in the flight logs.

“Mr. Myhrvold knew him from TED conferences and as a donor to basic scientific research,” the spokesperson said. “He regrets that he ever met him.”

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After taking a yearlong sabbatical in 1999, Myhrvold left Microsoft and co-founded Intellectual Ventures, a Bellevue-based investment firm that specializes in intellectual property and patenting. It also has been accused of patent trolling, a practice in which a firm acquires patents and sues over infringement to make money. He serves as the firm’s CEO.