Apple, the world's biggest technology company, and four publishers ended a European Union antitrust investigation after regulators accepted their offer to overhaul pricing models for digital books. Apple promised to end certain pricing agreements with the four companies and exclude certain clauses for five years after the EU said it was concerned that the deals were a form of collusion that raised retail prices. The iPad maker previously took a fixed percentage of 30 per cent of the e-book prices set by the publishers. The companies made an offer to settle the investigation in April.

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