About: http://webisa.webdatacommons.org/330963246

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	Generally, ??273 allows an entity that has been accused of infringing certain types of patents to escape liability if the entity has first used the patented invention at least 1 year before the effective filing date of the patent.
http://www.w3.org/ns/prov#wasQuotedFrom	cychanglaw.com