The WHDA US PTO Litigation Alert blog has listed last week’s reexamination requests filed with the United States Patent and Trademark Office, and the targets of those filings include two Apple design patents covering the on-screen representation of a page turn, reports “FOSS Patents” (

One of these patents was granted on Nov. 13, 2012 and “provoked quite some outrage because the idea of a page-turn animation appeared too basic and the resultant monopoly too broad to many observers,” the article adds. The other one, granted on Oct. 30, 2012, raises the same questions. “Someone is now trying to shoot both these design patents down before they ever get asserted in litigation,” writes Florian Mueller for “FOSS Patents.”