Don't know what the rules are up in Canada, but ask them a simple question........
When you answer the phone, are you gonna say....... Good morning, ABC Company, LLC. How can I help you ?? Or just Good morning, ABC, may I help you ??
For the most part, it's not needed on anything, but legal documents and whatnot. Advertising on a truck door, billboard or channels, not at all. However, some want it on, since they feel if they paid for it, they want others to know it. Trademarks and Registered markings, they should already know that from corporate. That's generally not a guessing game.