who trademarked "22"?

No one has so far actually, but clothing retailer Hollister is suing rival chain American Eagle Outfitters for using the number "22" on their apparel.

The brash lawsuit filed in Columbus, Ohio asks a judge to order American Eagle to stop using 22, to destroy any clothes or ads with the number and to pay Hollister for any profits from those items. Hollister - owned by Abercrombie and Fitch - claims rights to the number as they have been using it on their clothing for three years.

Hollister never registered a trademark on the number, but says it has common-law rights to the number as a trademark, whatever that means. American Eagle calls the lawsuit frivolous and point out that Hollister uses more than one number on their clothing.