Reschedule marijuana due to the gov't holding US patent 6630507. MJ helps inflammatory, autoimmune, & other diseases

It is rediculous that our government holds a patent on the medical benefits marijuana has and at the same time has it scheduled as a "drug with no medical value." Science and prior US Surgeon Generals state that marijuana has medical benefits while the DEA (which use money generated from marijuana busts to further fund themselves) states otherwise.
Ex: Why does the gov't not follow up when universities like Harvard state that marijuana cuts lung tumor growth by 50% http://www.sciencedaily.com/releases/2007/04/070417193338.htm
US Patent 6630507:The cannabinoids are found to have particular application as neuroprotectants, for example in limiting neurological damage following ischemic insults, such as stroke and trauma, or in the treatment of neurodegenerative diseases, such as Alzheimer's