Short answers, pulled from the story.
St. Hildegard of Bingen created the Lingua Ignota in the 12th century as an entirely artificial language used to communicate with God and express mystical visions. This language served as a form of private cant rather than a tool for everyday use.
L. L. Zamenhof proposed Esperanto in 1887 as an international auxiliary language designed to be easier to learn than natural languages. It has since become the most widely spoken constructed language.
Marc Okrand created the Klingon language for the Star Trek franchise in the 21st century. This language was designed to add depth and realism to the fictional world while remaining pronounceable by actors.
The Conlang Mailing List was founded in 1991 to serve as a global hub for discussion and collaboration among conlangers. Members from North America, Europe, and Asia used this platform to share translation challenges and new languages.
CBS and Paramount Pictures challenged a fan film project called Axanar in 2015 claiming that the Klingon language was part of their intellectual property. The Language Creation Society argued that the language itself was not copyrightable as it was a procedure or system for communication.