The Lens Institutional Toolkit covers over 100 million patent documents from around the world. It provides access to nearly all of the patent documents in the world as open, annotatable digital public goods that are integrated with scholarly and technical literature along with regulatory and business data. All Institutional Users (e.g. staff and students at the University of Cambridge) can also access an Institutional User API Plan while logged in as an institutional user. Register for an account with your Cambridge email for institutional user access to the API.
A number of databases provided by the University of Cambridge also include patent information.
Dimensions is a comprehensive collection of linked data in a single platform; from grants, publications, datasets and clinical trials to patents and policy documents. You can currently search over 143 million patents. To access the patents, sign in with your Cambridge email and run a search you will find Patents at the top of your results list.