Digital Equipment Corp has filed a lawsuit alleging patent infringement against Lago Systems Inc: DEC says that Lago wilfully infringed four US patents relating to its proprietary Standard Disk Interconnect and Standard Tape Interconnect technologies; a prior action against System Industries Inc has been settled, and DEC also sued Micro Technology Inc and itsGerman subsidiary, Micro Technology GmbH; DEC says that Lago rejected its request that it stop manufacturing infringing products and enter into the phase-out programmeintroduced in June; DEC is seeking monetary damages and lost profits from Lago as well as an injunction to stop the firm from making, using or selling any products that infringe its patents; in addition, DEC is seeking treble damages on the grounds that Lago has intentionally violated DEC’s patent rights.