Zillow Says Rival Real Estate Site Copied Home-Value Service

Law360, New York (September 13, 2012, 4:20 PM EDT) -- Real estate website operator Zillow Inc. on Wednesday accused its industry competitor Trulia Inc. of infringing its patent by offering a home valuation service purportedly based on Zillow's own calculation method.

The suit alleges that the “Trulia Estimate” real estate valuation service offered on the Trulia website is a knockoff of Zillow's “Zestimate” valuation system, accusing its rival of infringing U.S. Patent Number 7,970,674 B2 by bringing the competing service to market.

“Trulia’s blatant and ongoing copying of Zillow’s innovative approach to home valuation infringes Zillow’s...
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