Use the registered mark; write the phrase in all caps; including THE is acceptable but not necessary. Sometimes context calls for usage such as the Purdue BADGER HUDDLE®, in which case the THE would not be capitalized. Never say just HUDDLES, but BADGER HUDDLE® tailgates is acceptable. Use the initial-capped (but not all-capped) Huddle on subsequent references to a BADGER HUDDLE®. Periods and commas go after the ®. The word huddle is lowercase when referring to a literal football huddle or a gathering that’s figuratively called a huddle.