About Us At Keystone Law Group, P.C., we consider ourselves a boutique law firm specializing in the area of probate, trust and estate litigation and administration. Our team of experienced lawyers focused their law education in the area, so our clients can be sure that they will be provided with the most specialized and effective legal advice. Our practice areas include: Probate, Trust & Estate Litigation Probate, Trust & Estate Administration Conservatorships & Guardianships To learn more about our services and how we can help you, contact our office at (310) 444-9060.