Samsung has been hit with a wave of patent litigation targeting its Galaxy devices in Texas in mid-November. At least four tech companies sued the embattled South Korean electronics titan last week for allegedly infringing on their technology in its smartphones, tablets and watches.

Texas-based companies Transparence, Wave Sense and Cloud Controls and New Mexico-based company Encelion filed complaints against Samsung between Nov. 11 and Nov. 16 in the U.S. District Court for the Eastern District of Texas, Marshall Division. The companies are represented by Susman Godfrey and Miller Fair Henry; Skiermont Derby; Williams Simons & Landis; and Rabicoff Law, respectively.