`
`Daisy Manning
`Partner
`
`190 Carondelet Plaza, Suite 600
`St. Louis, MO 63105
`Direct: 314.345.6430
`Fax: 314.480.1505
`daisy.manning@huschblackwell.com
`
`VIA EMAIL DELIVERY
`
`Reza Mirzaie
`Mark A. Fenster
`Paul A. Kroeger
`C. Jay Chung
`Kristopher R. Davis
`James N. Pickens
`RUSS AUGUST & KABAT
`12424 Wilshire Boulevard 12th Floor
`Los Angeles, CA 90025
`rmirzaie@raklaw.com
`mafenster@raklaw.com
`pkroeger@raklaw.com
`jchung@raklaw.com
`kdavis@raklaw.com
`jpickens@raklaw.com
`
`Re:
`
`Inter Partes Review Proceeding Case No. 2021-00054;
`U.S. Patent No. 10,534,382
`
`Dear Counsel:
`
`I write on behalf of Defendant ecobee, Inc. (“ecobee”) regarding the matter of Ecofactor,
`Inc. v. ecobee, Inc., No. 6:20-cv-00078-ADA (W.D. Tex.) (“the Litigation”). ecobee is accused
`of infringing U.S. Patent No. 10,534,382 (“the ’382 Patent”) in the Litigation.
`
`This letter is in relation to Google LLC’s Petition for Inter Partes Review of the ’382
`Patent (the “‘382 IPR Petition”), IPR No. 2021-00054.
`
`ecobee hereby stipulates not to present the combination of prior art references specifically
`set forth in the Grounds of the ‘382 IPR Petition before the District Court in the Litigation so
`long as (i) the Board institutes inter partes review, and (ii) at the time of trial in the Litigation,
`the ’382 IPR has not been terminated for reasons other than a decision on the merits.
`
`HB: 4828-1759-8177.1
`
`Husch Blackwell LLP
`
`GOOGLE 1021
`
`
`
` April 2, 2021
`Page 2
`
`
`
`
`
`cc:
`
`Counsel of Record for Google LLC
`Counsel of Record for ecobee, Inc.
`
`Sincerely,
`
`HUSCH BLACKWELL LLP
`
`
`
`Daisy Manning
`Counsel for ecobee, Inc.
`
`Husch Blackwell LLP
`
`