Biogen fends off Mylan’s challenge Dimethyl Fumarate, Proprietary molecule of Biogen with brand name as TECFIDERA available as delayed release capsule with two strength 120mg & 240mg. USFDA has approved the New Drug Application (NDA 204063) provides for the use of Tecfidera (dimethyl fumarate) delayed-release capsules, 120 mg and 240 mg, for the treatment of patients with relapsing forms of multiple sclerosis. OB Listed Patents: US7619001 (Expiring Jun 20, 2020) covers Method for treating Multiple Sclerosis using pharmaceutical preparations with an excipient or at least one carrier using fumarates. The fumarates are limited to dimethyl fumarate (DMF), monomethyl fumarate (MMF), or their combination. US8399514 (Expiring Feb 07, 2028) directed to methods of treating patients needing treatment for Multiple Sclerosis (MS). The heart of the treatment, and a requirement of every claim is administering about 480 milligrams (mg) per day of certain fumarates. Id. The fumarates are limi...