214 F.3d 556 (5th Cir. 2000) SUMMIT PROPERTIES INC.; SUMMIT PROPERTIES LP; SUMMIT PROPERTIES PARTNERSHIP LP; STONY POINT/SUMMIT LP; MCGREGOR/MCGUIRE LP; HENDERSON/MCGUIRE PARTNERS LP; OAK RIDGE/MCGUIRE PARTNERS LP; WAVERLY PLACE/SUMMIT PARTNERS LP,Plaintiffs – Appellants,v.HOECHST CELANESE CORP., formerly known as Celanese Corporation; HOECHST CORPORATION; E. I. DUPONT DE NEMOURS, AND CO.; SHELL OIL COMPANY, doing business […]