After a judge in New York ruled that Apple took part in a conspiracy to fix electronic book prices, the technology giant said it will appeal the decision.
In a statement, Apple spokesman Tom Neumayr, said: "Apple did not conspire to fix e-book pricing."
"When we introduced the iBookstore in 2010, we gave customers more choice, injecting much needed innovation and competition into the market, breaking Amazon's monopolistic grip on the publishing industry. We've done nothing wrong."
- Apple took part in a conspiracy with five publishers to fix the price of electronic books and stifle competition, a US judge has ruled.
- It was said to be designed to target Amazon's practice of selling e-books for as little as $9.99, and keep prices up.
- An antitrust suit was filed against Apple by the US Department of Justice, 33 US states and territories in April 2012.
- Executives for Apple, the publishers and Amazon.com provided testimony at a hearing in New York.
- Penguin settled its case for $75m (£49m). Hachette, HarperCollins and Simon & Schuster created a $69m fund for refunds to consumers, and Macmillan settled for $26m, according to the BBC.
- The damages to be paid by Apple will be decided at a future hearing.
A US judge has ruled that Apple conspired with publishers to raise the price of electronic books, the Associated Press reports.
Manhattan judge Denise Cote said the firm "created a mechanism and environment that enabled them to act together in a matter of weeks to eliminate all retail price competition for their e-books."
She also ordered a new hearing to determine damages to be imposed on the technology firm.
The conspiracy was said to be designed to challenge online retailer Amazon's dominance of the burgeoning market.
Assistant Attorney General Bill Baer called the ruling "a victory for millions of consumers who choose to read books electronically."
Apple spokesman Tom Neumayr said: "We will continue to fight against these false accusations. We've done nothing wrong."