A federal appeals court has revived Baltimore’s lawsuit to recover the hundreds of thousands of dollars the city claims to have overpaid for blood-pressure pills because the drug’s manufacturer illegally cornered the market. Baltimore claims Actelion Pharmaceuticals Ltd.’s failure to ...

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WASHINGTON — The Justice Department on Tuesday sued Google for antitrust violations, alleging that it abused its dominance in online search and advertising to stifle competition and harm consumers. The lawsuit marks the government’s most significant act to protect competition ...

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WASHINGTON — U.S. business regulators are suing to break up the multibillion-dollar deal between tobacco giant Altria and e-cigarette startup Juul Labs, saying their partnership amounted to an agreement not to compete in the U.S. vaping market. The action announced ...

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More than a dozen lawsuits accusing Hunt Valley-based Sinclair Broadcast Group and Tribune Medica Co. of antitrust violations have been transferred and consolidated into federal multidstrict litigation in Illinois.

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Opening arguments are set for Thursday in the federal government's efforts to block AT&T's efforts to gobble up Time Warner in a case that could shape how you get — and how much you pay for — streaming TV and movies.

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About 12 chemical companies conspired to fix the amount Baltimore paid for aluminum sulfate, a water purifier, the city says in a federal antitrust lawsuit.

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A federal judge’s ruling that Live Nation Entertainment Inc. is not a monopoly has been upheld by the 4th U.S. Circuit Court of Appeals. Maryland-based It’s My Party Inc. and It’s My Amphitheatre Inc., the companies behind the 9:30 Club ...

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After nearly a decade in legal wrangling, a billion-dollar class-action lawsuit over Apple's iPod music players heads to trial on Tuesday in a California federal court.

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The Supreme Court is weighing what to do about a state regulatory board made up mostly of dentists that is trying to prevent lower-cost competitors who aren't dentists from offering teeth-whitening services.

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Maryland recently became the newest legal battleground for Uber, the popular ride-sharing service that is facing unfair-competition lawsuits in at least three other states. But the action in Maryland by nearly 30 cab companies appears to be unique because it also claims Uber violates antitrust laws by fixing prices and engaging in predatory pricing.

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