A Seattle woman filed a class action lawsuit against the Internet coupon giant, Groupon.

Barrie Arliss said Groupon sells gift certificates with clearly visible expiration dates, even though state law prohibits expiration dates on certificates.

In the class action complaint, Arliss also said the company put other illegal restrictions on the gift certificates it sells as Groupons.

Arliss said Groupon deceives customers into forgoing refunds when customers are entitled to them.