APA 7th Edition is the most commonly used referencing style here at the University of Portsmouth. Below you will find general guidance on how to reference and cite using APA 7th Edition, as well as examples for the specific sources you are likely to use in your assignments. 

Your department or lecturer may prefer you to reference sources differently from the guidance given here. Always follow the requirements of your department or lecturer. 

External visitors are welcome to use this guide, but note that your institution's requirements may differ from those suggested here.

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The year used in the reference should be the year the patent was issued, not the year in which it was applied for.

Author, Initials. (Year patent issued). Title (Patent No.). Issuing office. URL

Polus, M. (2019). Device for composite mesh braiding (Patent No. EP 3444 390 A1). European Patent Office. https://worldwide.espacenet.com/patent/search/family/063832165/publication/EP3444390A1?q=pn%3DEP3444390A1

In-text citation

The new device invented by Polus (2019) …