Apple's legal battles in a California federal court against Samsung Electronics have cost the company approximately $60 million so far, according t documents filed late on Thursday. Apple asked U.S. District Judge Lucy Koh to order Samsung to pay $15.7 million of the total amount Apple has spent in legal fees.

Apple claims it has paid the Morrison & Foerster law firm approximately $60 million through last month, not counting lawyers who had billed less than $100,000 on the case.

Apple and Samsung are engaged in global litigation over each other's intellectual property.