Kris Jenner: Makes Legal Move To Prove She's The Proudest Mom

Kris Jenner wants you to know she's a proud mama ... and now she wants to put her matriarchal pride to work ... to make some money.

We found out Kris filed to get a trademark for #ProudMama ... she says it's for "advertising purposes."

Kris has already been tagging #ProudMama on various business ventures and on social media.

This isn't the first time Kris has fought to get legal ownership of mom phrases. Back in March, she filed to trademark the word "momager."

If the trademark is approved, any and all moms will have to get Kris' permission if they want to advertise with the phrase #ProudMama ... or Kris can sue them.

... and you thought YOUR mom loved you.