Parties requérantes: Aalberts Industries NV (Utrecht, Pays-Bas); Comap SA, anciennement Aquatis France SAS (La Chapelle-St-Mesmin, France); et Simplex Armaturen + Fittings GmbH Co. KG (Argenbühl — Eisenharz, Allemagne) (représentants: R. Wesseling et M. van der Woude, puis R. Wesseling, avocats)
Applicants: Aalberts Industries NV (Utrecht, Netherlands); Comap SA, formerly Aquatis France SAS (La Chapelle-Saint-Mesmin, France); and Simplex Armaturen + Fittings GmbH Co. KG (Argenbühl-Eisenharz, Germany) (represented initially by R. Wesseling and M. van der Woude, and subsequently by R. Wesseling, lawyers)