Introducing the W3C Patent Policy

Must disclose if you have actual knowledge
"Disclosure is required when both of the following are true:
1. an individual in a Member organization receives a disclosure request as described in section 6.3; and
2. that individual has actual knowledge of a patent which the individual believes contains Essential Claim(s) with respect to the specification for which disclosure is requested."
Disclosure statements will be made through the AC Rep.
WG Participants don't have to disclose UNLESS they seek to exclude a patent from the licensing obligation

Disclosure