In patent law, this term designates a collision between rights claimed or granted; that is, where a persou claims a patent for the whole or any integral part of the ground already covered by an existing patent or by a pending application. Milton v. Kingsley, 7 App. D. C. 540; De-derick v. Fox (C. C.) 56 Fed. 717; Nathan Mfg. Co. v. Craig (O. C.) 49 Fed. 370
Source: Black’s Law Dictionary 2nd Ed (1910)
