The Pennsylvania Supreme Court rules on affirmative defenses in product liability actions, and, the U.S. high court denies a stay of a union vote in American Airlines' Chapter 11 case. Hear these and other stories from LexisNexis® Mealey's™ Publications. Copyright© 2012 LexisNexis, a division of Reed Elsevier Inc. For the latest litigation news headlines, visit www.lexisnexis.com/mealeys or www.lexisnexis.com/community.