Google faces another adversary to its book digitizing: Amazon.com

Amazon has joined the battle against Google’s digitizing millions of books on the grounds the deal might change fundamentally copyright law and violate copyright regulation. Amazon applied to the court requesting to decline settlement between Google and Authors Guild because it would change the copyright law by allowing Google to digitize books even if the copyright holder cannot be found, often called "orphan works."

"The proposed settlement usurps the role of Congress in legislating solutions to the complex issues raised by the interplay between new technologies and the nation's copyright laws," Amazon said in its filing, which was dated Tuesday.

If adopted by the court the proposed settlement would resolve the lawsuit filed by the Authors Guild and a group of publishers who alleged copyright infringement. Under the suggested plan Google offers to pay $125 million to create a Book Rights Registry, where authors and publishers could register works and receive compensation. The settlement stipulates that authors have until the end of this week to tell Google that they do not want their books digitized. A hearing on approval of the settlement is set for October 7 in Manhattan federal court.

Meantime, Google stated that the criticism of its rivals is based on their reluctance to allow anyone enter digital book market.

"The Google Books settlement is injecting more competition into the digital books space, so it's understandable why our competitors might fight hard to prevent more competition," said Google spokesman Gabriel Stricker in an email.

"It's important to note that this agreement is non-exclusive and if approved by the court, stands to expand access to millions of books in the U.S."