began to be reported in our Established Products business unit on January 1, 2013.

• Other recent loss of exclusivity impacts—In the U.S., we lost exclusivity for Vfend tablets in February 2011, for Xalatan in March 2011 and for Geodon in March 2012. The basic U.S. patent (including the six-month pediatric exclusivity period) for Protonix expired in January 2011. The basic patent for Vfend tablets in Brazil expired in January 2011. We lost exclusivity for Aromasin in the U.S. in April 2011, in the majority of European markets in July 2011 and in Japan in November 2011. We lost exclusivity for Xalatan and Xalacom in the majority of European markets in January 2012. We lost exclusivity for Aricept in the majority of European markets in February 2012 and April 2012. Caduet lost exclusivity in the U.S. in November 2011 and in the majority of European markets in March and May 2012. We lost exclusivity in the U.S. in September 2012 for Revatio tablet, and in June 2012 for Detrol IR. Detrol lost exclusivity in most European markets in September 2012.

In addition, we expect to lose exclusivity for various other products in various markets over the next few years. For additional information, including with regard to the expiration of the patents for various products in the U.S., European Union (EU) and Japan, see the “Patents and Intellectual Property Rights” section of our 2012 Annual Report on Form 10-K.

We will continue to aggressively defend our patent rights whenever we deem appropriate. For a discussion of certain recent developments with respect to patent litigation, see Notes to Consolidated Financial Statements—Note 17. Commitments and Contingencies.

In Alliance revenues, we expect to be negatively impacted by the following over the next few years:

• Aricept—Our rights to Aricept in Japan returned to Eisai Co., Ltd. in December 2012. We expect to lose exclusivity for the Aricept 23mg tablet in the U.S. in July 2013.

• Spiriva—Our collaboration with Boehringer Ingelheim (BI) for Spiriva expires on a country-by-country basis between 2012 and 2016, including the expiration in certain EU markets and Canada and Australia in 2012, which adversely impacted our 2012 results. We expect to experience a graduated decline in revenues from Spiriva through 2016.

• Enbrel—Our U.S. and Canada collaboration agreement with Amgen Inc. for Enbrel will expire in October 2013. While we are entitled to royalties for 36 months thereafter, we expect that those royalties will be significantly less than our current share of Enbrel profits from U.S. and Canada sales. Outside the U.S. and Canada, our exclusive rights to Enbrel continue in perpetuity.

• Rebif—Our collaboration agreement with EMD Serono Inc. (Serono) to co-promote Rebif in the U.S. will expire either at the end of 2013 or the end of 2015, depending on the outcome of pending litigation between Pfizer and Serono concerning the interpretation of the agreement. We believe that we are entitled to a 24-month extension of the agreement to the end of 2015. Serono believes that we are not entitled to the extension and that the agreement will expire at the end of 2013. In October 2011, the Philadelphia