[6] The Internet is a popular source of technical information and is of particular interest for the purposes of establishing the prior art.
[7] In August 2009, the European Patent Office (EPO) published a "notice concerning internet citations"[8] to "[set] out the practice followed at the EPO when citing documents retrieved from the internet in both the European and the PCT procedure."
[11] The two decisions originate from a contrived test case built by the parties, i.e. the patent proprietor and the opponent.
[12] In decision T 1553/06 (page 72), the Board proposed a test to decide whether a document stored on the World Wide Web has been made available to the public, whereas, in decision T2/09, the Board dealt with the alleged public availability of an email transmitted over the Internet.
[11] The EPO Guidelines cite the Internet Archive as well as Wikipedia as possible and credible sources of prior art.