CMP Media LLC, O'Reilly Media Inc's production partner for their Web 2.0 Conferences, has apparently trademarked "Web 2.0" and has submitted a cease and desist order to IT@Cork in regards to one of their upcoming conferences.

IT@Cork, a non-profit organization based in Cork, Ireland, will be presenting a Web 2.0 Half Day Conference on June 8th, 2006. According to CMP, IT@Cork's usage of "Web 2.0" in their conference's title "directly violates [CMP's] exclusive rights" and "can only be viewed as a deliberate attempt to trade off the good will of CMP and cause confusion in the market."

A reply was sent from IT@Cork to CMP, but it was met with a resounding "no" in regards to using "Web 2.0" in future conference titles.