Complex sentence: Apple accused Samsung of infringing on three utility patents (United States Patent Nos.7,469,381,7,844,915, and 7,864,163) and four design patents (United States Patent Nos. D504,889, D593,087, D618,677, and D604,305).
Split into simpler sentences: Apple accused Samsung of infringing on three utility patents (United States Patent Nos.7,469,381,7,844,915, and 7,864,163). Apple also accused Samsung of infringing four design patents (United States Patent Nos. D504,889, D593,087, D618,677, and D604,305).