Return non-matching pattern with grep?

Question

I'm using grep for filtering a bunch of files. However, I need to remove exactly one pattern from the results. Like this

grep pattern FILES | ... do something ... | grep remove_pattern | ... do something ...

I can obviously replace remove_pattern with a regular expression but I prefer not to use them, if I can, in order to reduce complexity. Therefore I was wondering if there was an "opposite grep" that returns only the non-matching patterns, notgrep remove_pattern or something like that.

Answer 1

Use the grep -v option.