The literary agent Andrew Wylie said on Wednesday that he would begin his own publishing venture, called Odyssey Editions, which will produce e-book editions of titles by some of his clients, including Saul Bellow, John Updike and Philip Roth.

Mr. Wylie said his new company would focus on older titles whose digital rights are not owned by traditional publishers. The books will be available exclusively at Amazon’s Kindle store for two years.

In making the announcement Mr. Wylie opened a new front, and a possible negotiating tool, in a debate over e-book rights for what are called backlist titles. Many traditional publishers have said they own the electronic rights to those books, but some authors and their estates have disagreed, arguing that since the books were published before e-books existed, the digital rights were not explicitly sold to the publishers.

“The fact remains that backlist digital rights were not conveyed to publishers, and so there’s an opportunity to do something with those rights,” Mr. Wylie said in an interview.