SLACK
"SLACK" is no longer active. Dead trademarks are generally available to file, but you should verify no similar active marks exist in the same class before proceeding.
SLACK is registered to cover downloadable mobile application featuring software for use in group communication, postings, memoranda and instant messaging, file sharing, calendar synchronization.
SALESFORCE, INC. is a mid-size portfolio holder with active trademark management, with 14 trademark filings on record (1 currently active), spanning 8 years of filing activity.
This application represents a technology product or software filing (Class 9 — Electronics), filed in May 2015.
These marks may compete in overlapping trademark classes. Consult an attorney before filing a similar brand.