Word marks using "love" that have been trademark registered include: I Love a Comeback - Detroit Love - The Most Beautiful Face is the One That Loves You - For Women That Love Color
Trademark Logo - Fingerprint of Love
This trademark logo is registered to HEARST NEWSPAPERS PARTNERSHIP, L.P.
By Mary Bellis, About.com Guide
The mark is described as two crossed thumbprints creating the design of a heart.
Trademark Logo - Fingerprint of Love
USPTO