I'd like to nominate Watchmen! Both the original comic (1985) and the movie adaptation (2009) fall within the 10 year rule.

Before Watchmen (2012) and Doomsday Clock (2017) are both more recent and break the rule, but I'd argue that they shouldn't count as canon. Moore and Gibbons haven't worked on either series, and they contain content that actively contradicts the canon set up in the original serial.