Serius is right on the merits here (they don't infringe) but their arguments about why, especially the ones based on "functionality," are....not great.
Also, I am biased but I think #CurviSil was right. Don't love the broadside attack here.
Guest Post by Prof. Burstein: Design patents: Line drawing & Locarno

By Sarah Burstein, Professor of Law at Suffolk University Law School. Columbia Sportswear North America, Inc. v. Seirus Innovative Accessories, Inc., …

Patently-O