Since December 2011, Dublin-based Medtronic Minimally Invasive Therapies has been planning a business split, separating its medical device-focused Covidien Ltd. from its pharmaceutical and imaging-based Mallinckrodt PLC. The Irish firm’s fiscal year ends on Sept. 27, 2013, while the split into two separate, publicly traded companies is slated to occur on June 28.
The new Mallinckrodt will retain a focus on neurology drugs, mainly in the areas of pain therapy and attention deficit/hyperactivity...