Duct tape might do the trick.
Did your dog also eat your homework? 
It’s definitely repairable. Clean the edges, use a hot knife for precision, find durable patching material, and use abrasion-resistant thread. It might not look new, but it’s doable.
If Patagonia can’t help, there are specialists who can repair it. Here’s one: https://www.instagram.com/zoepatches
Patagonia’s warranty service is excellent, just take it in or send it back.
They might not repair it if it’s severely damaged, but they usually offer a good store credit.
With enough duct tape and a bit of creativity, almost anything is repairable.
That looks pretty bad. Was there an epic tale of survival behind this damage?
The cost to repair might exceed the value of the backpack, so it might be better to just replace it.
It might be more practical to just buy a new one.
You could cut away the parts that are too damaged to save.
This reminds me of a song about knowing when to hold 'em and when to fold 'em.
Yes, it’s repairable!
Anything’s fixable if you’re determined enough.