This company's past ability to extend patent-protected market exclusivity for its drugs bodes well for new investors.With patent-protected market exclusivity for their products, pharmaceutical companies reliably produce profits that they aren't shy about distributing to shareholders. In an industry already known for relatively strong dividend payout raises, AbbVie (ABBV -0.31%) stands out with a quarterly payment that has soared 221.6% over the past decade. An ability to retain exclusivity for its former le ...