Looking down the list, you can see Gleevec, Lantus, Namenda, Abilify and Avodart/Jalyn, which will all have expired by November 20; one (Gleevec) expired on January 4. These drugs are made by some of the titans in the pharmaceutical industry, including Novartis and GlaxoSmithKline, and each drug individually is worth at least $1 billion per year.