ALEXANDRIA, Va., March 12 -- United States Patent no. 12,250,428, issued on March 11, was assigned to Comcast Cable Communications LLC (Philadelphia).

"Selective interactivity" was invented by Steve Ariantaj (San Rafael, Calif.), Igor Shapiro (San Francisco), Vilas Veeraraghavan (Mill Valley, Calif.), Stephen Wiebe (Mill Valley, Calif.) and Mark Thomas (San Francisco).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system may selectively deliver interactive portions of a piece of content, based for example on a recipient user's historical tendency to use interactive portions of prior content. Multiple levels of interactivity may be defined for a given piece of content, such as an advertisement, and different...