“This ruling ensures we will be able to continue to provide this information,” said a Zillow Group spokesperson.

A federal court ruled in favor of real estate giant Zillow Group and its subsidiaries Zillow and Trulia, tossing an infringement suit for a patent that covers features common in virtually all listing search apps.

Corus Realty Holdings, a licensed Virginia brokerage until 2009, sued the companies in June 2018, alleging the Zillow and Trulia mobile listing search apps violated Corus’s 2001 patent, called “Real-estate information search and retrieval system.

The patent chronicles features such as “a data terminal which displays icons representing properties in a given real-estate market on a digital map. The icons are selectable so that, when selected, information derived from an MLS or other database are displayed in association with the map.”

The patent goes on to detail how the terminal would use GPS and a “data-enabled mobile phone” to receive location data and display an icon representing the terminal’s current location on a map. Through the phone, the terminal could also link to a property information database and display that information, including visual media, when a property icon is selected on the map.

In response to the suit, Zillow Group filed a countersuit asking the court to declare that it had not violated Corus’ patent and that the patent itself was invalid. Zillow Group also filed a motion for summary judgment, arguing in part that Zillow and Trulia’s apps did not infringe on the patent because they used remote online databases to search for property information, not a database stored in the local device as asserted in the patent, and that the patent’s claims are not valid due to “prior art” (other existing inventions).

Image included in Corus Realty Holdings’ patent

On March 31, the court filed its judgment dismissing both Corus’ sole claim of infringement and Zillow Group’s counterclaims. A previous order had noted that the court declined to rule on the patent’s invalidity but had found in favor of Zillow Group’s argument of non-infringement, Zillow Group spokesperson Lindsey Lombardi told Inman via email. (That order has been provisionally sealed by the court and is currently inaccessible.)

“We are pleased the court ruled in our favor in this case. Zillow and Trulia have always been committed to empowering people with free, accurate information about home listings and real estate, and this ruling ensures we will be able to continue to provide this information,” Lombardi said in a statement.

Zillow Group has no plans to pursue the counterclaims given that the judge dismissed them, Lombardi said.

Michael Gorman, now managing director of the Corus Group of Long & Foster, is listed as an inventor on the patent and was formerly founder and CEO of Corus Realty Holdings. Gorman did not respond to an emailed request for comment.

Email Andrea V. Brambila.
Like me on Facebook | Follow me on Twitter

Show Comments Hide Comments
Sign up for Inman’s Morning Headlines
What you need to know to start your day with all the latest industry developments
By submitting your email address, you agree to receive marketing emails from Inman.
Thank you for subscribing to Morning Headlines.
Back to top
Only 3 days left to register for Inman Connect Las Vegas before prices go up! Don't miss the premier event for real estate pros.Register Now ×
Limited Time Offer: Get 1 year of Inman Select for $199SUBSCRIBE×
Log in
If you created your account with Google or Facebook
Don't have an account?
Forgot your password?
No Problem

Simply enter the email address you used to create your account and click "Reset Password". You will receive additional instructions via email.

Forgot your username? If so please contact customer support at (510) 658-9252

Password Reset Confirmation

Password Reset Instructions have been sent to

Subscribe to The Weekender
Get the week's leading headlines delivered straight to your inbox.
Top headlines from around the real estate industry. Breaking news as it happens.
15 stories covering tech, special reports, video and opinion.
Unique features from hacker profiles to portal watch and video interviews.
Unique features from hacker profiles to portal watch and video interviews.
It looks like you’re already a Select Member!
To subscribe to exclusive newsletters, visit your email preferences in the account settings.
Up-to-the-minute news and interviews in your inbox, ticket discounts for Inman events and more
1-Step CheckoutPay with a credit card
By continuing, you agree to Inman’s Terms of Use and Privacy Policy.

You will be charged . Your subscription will automatically renew for on . For more details on our payment terms and how to cancel, click here.

Interested in a group subscription?
Finish setting up your subscription