About 3 Trademarks found that are owned by Echalk Inc.

[downloadable educational software for instructional use featuring instruction in the curriculum of K-12 schools, database management and electronic web-based communications, and accompanying material, namely, manuals and operating instructions sold as a unit therewith]

computer services, namely, providing electronic mail, instant messaging services, file sharing, shared calendaring, voice over IP and streaming video features concerning K-12 education and instruction

EDUCATION CHALK; ELECTRONIC CHALK

The color(s) green, blue and purple is/are claimed as a feature of the mark.