My unhappy cat used a favorite sofa as a scratch post.

if the sofa has a ruffle on it -- you could possibly remove the ruffle and then hand stitch a section of the ruffle --- which you would be turning it into a flat piece of materials --- to the corner areas to hide where it was scratched

Look to the back of sofa for the needed fabric patch and than patch the back with A good substitute

You could declaw your cat.

I purchased a tapestry that coordinated with my sofa (lush love seat & chair). My daughters cats manage to get front AND back corners.

Simply cut a piece of tapestry to size & add 1” then using upholstery tacks (the curly kind) affixed tapestry to sides is the furniture. To prevent scratching from happening again, she purchased Feliway to keep cats from scratching. She bought a cat scratching post that all 3 cats liked, and she hasn’t had any issues now for 3 years :)

Did the sofa come with matching pillow? Is there a skirt, to which you could steal fabric on the back?

spray you couch with a a light soloution of peppermint oil and water or you can use water and a ol int mouth wash , test a spot on the back of couch first to be sure it dose not fade materials the mixture should be one part solution and three parts distilled water. try thi before you try recovering your ouch it is quit exspensive to recover, or if you buy a new couch then lightly spay it right off i spray mine about once a week as its one day i do housse cleanng easy enough i have my babies cat an doggie.

Haha I see the dog picture Peg and yes, my dogs would agree. That does not fix my sofa, though!

Don’t declaw your cat, my sister did that and it caused all kind of misery for the cat, she didn’t walk without pain.

there is a spray you can use to deter the cat from scratching or roll a news paper and when you see the cat scratcking hit the sofa and scare the cat after a while it will stop

Try wrapping with a dark twine.