A package including a container and closure, and a method of authenticating same. In the package or a portion thereof, a marker material is dispersed into a base material and can be detected in the aftermarket by absorption spectroscopy to establish the authenticity of a product contained in the pac...http://www.google.co.uk/patents/US7436499?utm_source=gb-gplus-sharePatent US7436499 - Plastic packaging having a marker material
