We see a lot of malpractice suits, but not a lot of them claim $300 million in damages. The daughter of a cofounder of the since-toppled General Growth shopping mall empire claims that her family's longtime lawyers at Neal Gerber used family trust money to prop up the company's plummeting stock price as it headed for bankruptcy. She says she lost more than $1 billion as a result.

The Second Circuit on Friday vacated a lower court ruling that the collective bargaining agreement between players and owners preempts New York state law on workers' compensation. The unanimous decision allows owners to continue withholding workers' comp benefits that the players' union says its injured members are entitled to.

Four years after regulators began investigating alleged collusion by the banks controlling the CDS market, private antitrust litigation is finally starting to take shape.

Lions Gate, represented by Wachtell, Lipton, Rosen & Katz, claims that Icahn disingenuously criticized a proposed merger between the film studio and MGM in order to buy more holdings in the two companies at a reduced price.

Cascades Ventures Inc.--a descendant of the "original patent troll"--may have reached the end of its campaign against the self-described troll-fighter RPX Corporation and a quintet of tech companies that allegedly orchestrated an illegal boycott of Cascades's patents.

The appellate ruling comes too late to keep generic manufacturers of the colon cancer drug Eloxatin out of the market, but the Federal Circuit found that a lower court judge interpreted Sanofi's patent incorrectly when he cleared the way for its rivals.