Process analytical technology definition

This wider definition can be summarized as the analysis of the process and had been developing in the pharmaceutical industry since around 2004-2006 to encourage better use of the information content of classical process analytical methods for the improvement of process development and connol. Particularly in the pharmaceutical industry, the acronym PAT for Process Analytical Technology was often being used to describe this newer definition of process analytics. 

With the onset of the QbD initiative (see Section 2.3.4), first codified in the ICH Q8 document in 2006, the above-mentioned broader definition of process analytical technology has somewhat evolved into parts of the key elements of the broad definition of QbD, resulting in a partial retraction of the term PAT back... 

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