Their home page has* a link titled Straight dope on reform, which naturally caught my eye. At that site they have a javascipt link title “GET THE STRAIGHT DOPE”. I half-expected a column by Cecil, or an offer to register for the SDMB (OK, not really).
You probably cannot copyright the phrase “The Straight Dope,” but you can trademark it. (If you look at the logo on the top of the page, you will see the small (R) indicating that it is indeed a registered trademark).
It appears that the Chicago Reader has trademarked “The Straight Dope” for:
Although this is not my field of practice, and I am not the Reader’s lawyer, if CNN has a web feature purporting to offer “the straight dope” on a subject, there may be grounds to send it a cease and desist letter or take other action.
Yeah, I think the point is familiar short phrase. As explained above though, these can be trademarked for use in specific areas, as Chicago Reader has done with SD both for internet and print arenas. (I note, however, that their television trademark for the phrase is now marked as dead in the official register.)
Trump tried to trademark “You’re fired” recently but I think a bunch of potteries were there first.
E.E. Smith’s Lensman series - written primarily in the 1940s if I’m not mistaken - was full of mentions of getting “the dope” and I believe even a few mentions of “the straight dope”.