https://www.epo.org/en/service-support/faq/searching-patents/patent-management-and-valuation/what-patent-portfolio

What is a patent portfolio?

A patent portfolio is the list of patents owned by an individual or a company. Managing your patent portfolio and comparing it to those of other companies is essential to helping you better determine the economic value of your own patents and remaining competitive. Patent portfolio management can help you to identify opportunity and risks factors (e.g. growing markets/appearance of substitute technologies).