Which of these popular terms ar trademarked: "Just do it", "Momlife", "Post It", "Slurpee", "Smartphone"...

The following terms are trademarked:

"Just do it" - trademarked by Nike, Inc.
"Post-it" - trademarked by 3M.
"Slurpee" - trademarked by 7-Eleven, Inc.
"Smartphone" - not trademarked. This term is considered a generic term used to describe a type of mobile phone with advanced features and capabilities.
"Bazinga" - trademarked by Warner Bros. Entertainment Inc.
"Elf on the Shelf" - trademarked by CCA and B, LLC.
"FaceTime" - trademarked by Apple Inc.
"Barbie" - trademarked by Mattel, Inc.
"Jeep" - trademarked by FCA US LLC.
"May the Force be with you" - not trademarked. This phrase is considered a common phrase used in popular culture.
"Rudolph" - trademarked by Character Arts, LLC.
"Skywalker" - trademarked by Lucasfilm Entertainment Company Ltd. LLC.
"Candy" - not trademarked. This term is considered a generic term used to describe various types of sweets and confections.
"Harry Postter" - not trademarked. This is a misspelling of the trademarked name "Harry Potter," which is owned by Warner Bros. Entertainment Inc.
"Litecoin" - trademarked by Litecoin Foundation.
"NYPD" - trademarked by City of New York.
"Octogon" - not trademarked. This term is considered a common geometrical shape.
"Festivus" - trademarked by Sony Pictures Television Inc.
"Flavortown" - trademarked by Guy Fieri.

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