EU antitrust regulators launched an investigation on Tuesday into news and financial data publisher Thomson Reuters' use of its real-time market datafeed, saying it might block users moving to rival firms.

New York's attorney general has filed an antitrust lawsuit against Intel, claiming the company used "illegal threats and collusion" to dominate the marketplace for computer microprocessors.

Do you remember that very strong European Competition czar who battled Microsoft and Intel, accusing them of anti-competitive behavior? The question now is: will she be strong enough to battle Germany’s Angela Merkel?

Pfizer has won U.S. antitrust approval to buy Wyeth after agreeing to sell some assets to prevent it from acquiring a monopoly in the market for some animal vaccines and pharmaceuticals, the Federal Trade Commission said on Wednesday.

The Obama Posse is hellbent-for-leather on a misguided crusade to rein in the one clear growth engine of the American manufacturing economy: high-tech.

The Justice Department has begun an investigation into whether the recruiting practices of some of the largest technology companies violated antitrust laws, according to two people with knowledge of the investigation, the New York Times reported.