(Capcom's primary storyline)
WilPharma Corporation was a pharmaceutical company responsible for creating a vaccine for the t-Virus; an inoculation designed as a way to prevent further outbreaks of the virus. As a result of the actions of Umbrella Pharmaceuticals, its decision to develop a t-virus vaccine was met with suspicion and scrutiny, coupled with the visibly business-focused attitude of Senator Ron Davis, one of the company's most vocal backers and a member of the committee responsible for sterilizing Raccoon City. It made several controversial decisions; most of all establishing a new research facility in Harvardville, further raising suspicon of its legitimacy to the public eye
Its downfall began when the human rights organization, Terra Save, found photos of its latest human test subject; the result of their clinical tests on humans conducted in India. All of the victims had been exposed to the t-Virus, leading to suspicon they themselves had spread the virus in the first place, and so demanded that WilPharma immediately release the results of their tests. As a result of the scathing accusations hurled at them by TerraSave, the company's stock fell sharply and its and public relations degraded to the point it had protests outside its Harvardville facility. Ironically, TerraSave's aggressive campaigns against WilPharma ended up hindering the company's ability to distribute the t-Virus vaccine, hurting their own cause.
In truth, WilPharma itself had not been responsible for the t-virus outbreak in India. The true culprit was one WilPharma's employees; Head Researcher Frederic Downing, who had secretly unleashed the virus on different areas around the world as a twisted sales pitch to General Miguel Grandé, the head of the Republic of Bajirib and a sponsor of terrorism. One such incident, where Downing himself acted as the black market broker who supplied the virus, occurring in India, with the photos of WilPharma's "human testing" actually being of legitimate application of their newly-developed t-Vaccine.
As one last pitch to Grande; Downing also unleashed the t-Virus on the Hardvardville Airport; when the United States Marine Corps arrived and WilPharma shipped the t-vaccine, Downing planted bombs in the trucks carrying the vaccine, destroying all of WilPharma's supply. Downing then returned to WilPharma's facility to collect his research and disappear, while under the pretense of overseeing the production of more of the antivirus. Downing also planted a bomb at WilPharma, knowing it would be blamed on Curtis Miller, in order to fake his death and make a clean escape.
The plan ultimately came undone when the combined efforts of Leon Scott Kennedy, Claire Redfield, and Angela Miller exposed Downing's scheme (when Downing attempted to escape and sell different strains of the t- and G-Viruses to Grandé). Unfortunately, the final results of this ordeal destroyed Wilpharma's entire supply of the t-vaccine, leaving the world succeptable to the risk of a t-virus infection once more.
As a result, WilPharma went bankrupt, and Tricell, Inc. offered to purchase its assets in an covert move to acquire more research. TriCell agents then went to the destroyed Hardvardville facility and collected the remains of Curtis Miller in order to secure a sample of the G-virus.