I found the Broom Groomer on Quirky's site [1], and what do you know?--the product description says, Patent pending. Well, that must mean there's a patent application in the USPTO system! Sure enough, Quirky's patent application, dated September 7, 2011 (provisionally filed April 18), titled Waste receptacle [2]. Bill Ward is one of the inventors. I am not qualified to judge this patent against the one mentioned by OXO, so I invite others to compare the two.
[1] http://www.quirky.com/products/36-Broom-Groomer-Broom-Cleani...
[2] http://www.google.com/patents/US20120260453