Microsoft Corp. said it has sued Samsung Electronics Co., claiming its rival violated a patent-licensing contract. The dispute involves technology included in Android, Google Inc.'s operating system for mobile phones and tablets.
Allergan filed a lawsuit claiming Valeant Pharmaceuticals, investor William Ackman and his firm Pershing Square violated securities laws prohibiting insider trading, among other things, in the companies' takeover battle.
The dramatic fall of troubled Portuguese conglomerate Espírito Santo International SA, which has hit hard the country's second-largest bank by assets, continued to create a cascade of creditor-protection filings by related entities.
Sales at Michael Kors Holdings, a maker of "affordable luxury" handbags, have outpaced competitors for years and its profits have soared. But some on Wall Street worry that the company has expanded too fast and that discounts are rising at department stores.