(Seattle, WA) -- Microsoft co-founder and Portland Trailblazers owner Paul Allen is dead at the age of 65. He died yesterday afternoon from complications of non-Hodgkin's lymphoma in Seattle. Allen founded Microsoft alongside Bill Gates in 1975. Allen also owned the NFL's Seattle Seahawks. Allen has also invested in commercial space flight through Mojave Aerospace Ventures. Allen had battled cancer in the past and earlier this month he announced that the disease had returned.