So, in your list of 3:

- one is "OpenText The Information Company" which seems perfectly fine. It's not descriptive of a category of "things"

- another is "OpenText Elite" : same comment

- and the last is the original "OpenText" French trademark from 1991, which expired 25 years ago.

It's entirely possible that it went through in '91 because, again, an "open text" isn't something that makes a lot of sense at the time of Minitel and typewriters, but could maybe be rejected today (which is why they now use a figurative trademark)