I'm going to try posting this again under another title. I accidentally posted it on the United States, and I've tried twice to post it on Europe, to no avail.
My husband and I have only been to La Coupole once, and that was for lunch with reservations on Easter Sunday. I know that they have a breakfast buffet from 8:30 to 10:30, but are they open as a cafe at other times? We plan to go there shortly after we arrive in Paris, have coffee & croissants, if possible, and then walk over to the Tour Montparnasse. We'll be there too late for the buffet breakfast, though.
Sandy

i also only ate lunch there. could you write them an email?

Here is their webpage. Doesn't answer your question but has contact information:

http://tinyurl.com/2ju65a

lincasanova & Ronda,
Thanks! That's a good idea to e-mail them. If I hear from them I'll let you know
Sandy

There are quite a few cafes around there, famous or not, that are surely open for a cafe/croissant if La Coupole is not..
www.lacoupoleparis.com
"Petit-déjeuner de 8h30 à 10h30"

you could also have breakfast at le ciel at tour montparnasse. 15 euros.

Travelnut,
Thanks...I'm sure there are, but we particularly wanted to try breakfast at La Coupole if it's open. We enjoyed it a lot when we had Easter lunch there. If it's not, we'll head for another one
Sandy

lincasanova,
Thanks! That may be where we head if La Coupole isn't open for breakfast after 10:30, as we'll be heading there anyway.
Sandy

Travelnut,
Thanks for the link... I knew that the buffet was over at 10:30, but wondered if they offered croissant and tea/coffee the rest of the day. Not a big deal if it's not, but we did want to eat there In some books, La Coupole is listed as a cafe, but in others it is a brasserie. For some reason I have the idea that it is open as a cafe the rest of the day. Guess we'll find out.
Sandy

not sure what time they finish, but i thought that sounded like a nice way to start the morning!

lincasanova,
It does, and what a view!

http://www.cieldeparis.com/vue.php
Sandy