About: http://webisa.webdatacommons.org/8248278

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The length of such an extension can be up to five additional years and depends on factors such as the amount of time taken by the FDA to review the first marketing approval application of the drug covered by the patent.
http://www.w3.org/ns/prov#wasQuotedFrom	marketplace.org