There are many lawsuits between businesses. In fact, such business litigation is commonplace. For instance, retailers recently sued Pfizer for generic Lipitor delays, stating there was a conspiracy to delay sales of Lipitor, the best-selling drug in history. Facebook, Inc. and Yahoo, Inc. have agreed to forge a broad internet advertising and licensing partnership, putting to rest their dueling patent lawsuits. Apple, which has been very actively suing companies, has filed suit against Samsung Electronics Co over patents for technology  used in smart phones and tablets  and it seeks $2.525 billion in damages.  And in another suit Apple is paying $60 million to settle a China iPad trademark dispute. This involved Proview Technology (Shenzhen).