EA, Activision, Zynga, Take-Two and Konami -- among other publishers -- are targets of a string of lawsuits concerning a fantasy sports patent by a Texas-based company called Virtual Gaming Technologies, LLC.

According to a series of complaints, Virtual Gaming Technologies claims that many of the most popular sports gaming franchises in the world are infringing on its patents covering interactive games based on events occurring in real time, such as letting a fantasy sports owner trade players mid-game depending on their real-life counterparts' performance.

One of the patents in question also covers interactive games based on real-time or taped television broadcasts.

Games specifically mentioned in the suit include EA's Madden, FIFA, and NHL franchises, Konami's Pro Evolution Soccer 2015, Take-Two's NBA 2K15 and WWE 2K16, Zynga's NFL Showdown and Activision's NASCAR The Game: Inside Line. In each case, the filing company is seeking damages with interest.