What are the ISO 9001:2015 guidelines regarding the intellectual property? 

ISO 9001:2015 Cl. 7.1.6 Control of organizational knowledge is aimed at:

• Defining knowledge necessary to operate the processes and achieve products and services compliance;
• Obtaining and maintaining of knowledge
• Ensuring the availability of knowledge to the extent necessary;
• Updating the current knowledge and obtaining access to any necessary additional knowledge and the required updates in response to changing needs and trends.

The basis of knowledge control is to transform the flow of information from internal and external sources to the Organization’s knowledge bank - a database, structured into groups of intellectual assets of the Organization, considering the strategic directions of development, and hosted on the server of the Organization.
More information, including Organizational Knowledge Bank Structure - in our Quality System Procedure  QSP 7.1-04 Control of organizational knowledge