IPNews® – The fight over a patent for online home appraisal systems continues between Zillow and Trulia as both spar in federal court.

Zillow originally filed its lawsuit against Trulia for patent infringement, claiming Trulia’s home valuation service resembled its own program too closely.  Trulia countered, arguing Zillow’s patent is merely for an abstract idea and therefore it should not be eligible for patent protection.  To continue reading, click: Home Valuation Services Face Off Over Fight for Patent