BRUSSELS, Dec 10 (Reuters) - Chip design software

company Synopsys ( SNPS ) has offered remedies to address EU

antitrust concerns about its $35 billion cash-and-stock

acquisition of engineering software maker Ansys ( ANSS ),

according to a European Commission filing on Tuesday.

The deal, announced in January, is the biggest in the

technology sector since chipmaker Broadcom's ( AVGO ) $69

billion buy of software maker VMware last November.