VISTA, Calif.--(BUSINESS WIRE)--Aperio Technologies, Inc., (Aperio), a global leader in digital pathology for the healthcare and life sciences industry, announced today that the United States Patent and Trademark Office has issued the company patent No. 7,502,519, covering systems and methods for image pattern recognition using vector quantization (VQ). This is Aperio’s second patent on the use of VQ for pattern recognition applications.