NEW YORK (Standard&Poor's) Nov. 5, 2012--Standard&Poor's Ratings Services said today that it assigned its 'A' senior unsecured rating to North Chicago, Ill.-based AbbVie Inc.'s minimum four-issue offering of notes through a 144A placement. The offerings consist of four fixed-rate issues with maturities in 2015, 2017, 2022, and 2042. Whether any other securities are placed, as well as final terms, including amounts, will be set by market conditions. These notes, which have registration rights, constitute a significant portion of planned borrowings expected to total $15.7 billion. A guarantee from AbbVie's current parent, 'A+'-rated Abbott Laboratories falls away upon separation of the two companies expected by year end. The guarantee, in our view, did not enhance AbbVie's long-term