So explain like I'm five: is this an overly broad patent on an idea, e.g. they have a 'system and method for catching mice' and they're suing everyone who makes

So explain like I'm five: is this an overly broad patent on an idea, e.g. they have a 'system and method for catching mice' and they're suing everyone who makes anything that catches mice? Or did they invent a particular type of mouse trap, and they're suing over someone who is selling the exact same implementation? I love a good angry mob as much as the next guy, and can fully get behind the name-calling if there's something truly nefarious, but help me understand exactly what's being litigated here and why AGIS is deserving of the 'piece of shit' label.