Massoud Heidary's patent infringement lawsuit against Amazon and Ring was dismissed. The CAFC affirmed the dismissal, finding improper venue because Ring, a Delaware LLC, lacked a Maryland presence as required. Further, the court held that Heidary failed to adequately plead direct patent infringement, as his complaint insufficiently linked the accused products to his patented fire protection system. Because direct infringement was not established, the induced infringement claim also failed. The dismissal was upheld despite Heidary's pro se status.