The Seattle Times is reporting that Amazon has sued Cendant alleging infringement of patents. The story is thin on details, but the patents are supposed to be “e-commerce” patents, and Amazon contends they were infringed when using tools “to secure credit-card transactions”. It will be interesting to analyse the claims (and the patents) when further details emerge.

Cendant sued Amazon last year, claiming infringement of a patent for recommending choices to buyers based on previous ordering history.