`United States Patent
`(10) Number:
`US 6,061,551 K1
`
`(45) Certificate Issued:Sorrells et al. Feb. 9, 2018
`
`
`(54) METHOD AND SYSTEM FOR
`DOWN-CONVERTING
`ELECTROMAGNETIC SIGNALS
`
`(75)
`
`Inventors: David Sorrells; Michael J. Bultman;
`Robert W. Cook; Richard C. Looke;
`Charley D. Moses, Jr.
`
`(73) Assignee: PARKERVISION, INC.
`
`Trial Number:
`
`IPR2014-00947 filed Jun. 12, 2014
`
`Inter Partes Review Certificate for:
`
`Patent No.:
`Issued:
`Appl. No.:
`Filed:
`
`6,061,551
`May 9, 2000
`09/176,022
`Oct. 21, 1998
`
`The results of IPR2014-00947 are reflected in this inter
`partes review certificate under 35 U.S.C. 318(b).
`
`
`
`INTER PARTES REVIEW CERTIFICATE
`U.S. Patent 6,061,551 K1
`Trial No. IPR2014-00947
`Certificate Issued Feb. 9, 2018
`
`1
`
`AS A RESULT OF THE INTER PARTES
`REVIEW PROCEEDING, IT HAS BEEN
`DETERMINED THAT:
`
`Claims 1, 23, 25, 161, 193 and 202 are cancelled.
`uf
`uf
`uf
`uf
`uf
`
`
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