Adobe chief executive Bruce Chizen will not rule out suing Microsoft over the "save as pdf" feature of Vista, the operating system slated for arrival next year.

Speaking to a German business paper, Chizen said the company was working with regulators but could take to the courts if this failed.

He said there were two options – to take direct legal action against Microsoft, or to work with regulators. Chizen said: "We are doing the latter. Then we will see." More from Reuters here.

Adobe was one of the companies which asked the European Competition Commission to investigate elements of Vista back in September.

Chizen also told the Euro am Sontag paper that Adobe would offer some of its products online and paid for by adverts. ®

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