Estech Systems IP LLC has filed its first cases since January 2022, suing 3CX (8:23-cv-02968), NEC (3:23-cv-02828), Plantronics (Polycom) (6:23-cv-00876), and Yealink Network Technology (2:23-cv-00623), in four separate districts. The NEC case was filed in the Northern District of Texas, which requires plaintiffs to file a certificate of interested parties; there, Estech Systems IP has not done so, disclosing only that Estech Systems, Inc. (Estech) is its parent. District Judge Jason K. Pulliam has been initially set to preside over the NEC case in the Western District of Texas, but earlier suits were assigned to Judge Alan D. Albright, whom Estech contended, in a recent appeal, wrongly granted another defendant summary judgment of noninfringement. Meanwhile, the Middle District of Florida suit against 3CX has already been dismissed, without prejudice and with leave to amend, because the “complaint constitutes an impermissible shotgun pleading”.