The new patent, issued just last year on Feb. 7, 2012, is quite broad and describes a “System for Disseminating Media Content Representing Episodes in a Serialized Sequence.” Personal Audio is also suing the popular Howstuffworks.com series, which like Ace Broadcasting, is a large podcasting presence on iTunes and across the web…

On Personal Audio’s website, the company said its patents “pioneered techniques now commonly used today in portable players, smartphones, tablets and other products” and lists several patents for music playlists, podcasting, personalized recommendations, and audio messaging.

We reached out to Personal Audio and Ace Broadcasting for comment.