Last month, the US Department of Justice filed an antitrust lawsuit against Apple, accusing the iPad maker of plotting with big publishers to control e-book prices.
Three of the publishers involved - Hachette Book Group, HarperCollins and Simon & Schuster - have already agreed to settle the dispute, leaving Apple to continue the battle. Now, Apple has fought back, accusing the US authorities of siding with the monopoly.
In a complaint filed at the US District Court Apple labels the government's allegations as "absurd."
"Apple's entry into eBook distribution is classic pro competitive conduct, and for Apple to be subject to hind-sight legal attack for a business strategy well-recognized as perfectly proper sends the wrong message to the market, and will discourage competitive entry and innovation and harm consumers," stated the company.
Some earlier reports suggested that Apple might have gotten into trouble because of its indifference towards powerful groups in Washington. Apple is a company known for its refusal to spend money on lobbying.
Another high profile target, Google, was also investigated by the US authorities and is now willing to splurge $20 million (£12.7 million) on DC lobbyists.