TECH. Ohloh, the open source network. Patentsoffice. Esp@cenet Home page. Patent search Espacenet offers free access to more than 70 million patent documents worldwide, containing information about inventions and technical developments from 1836 to today. Direct access Access Espacenet at the EPO Search the EPO's databases in German, English and French Access Espacenet at the European Commission Access Espacenet at national and regional offices Search using an interface in your language Available interface languages Getting started. iGrad. Silicon Republic. The Irish Innovation Center, San Jose, CA. TED: Ideas worth spreading. TechCrunch.