How should I approach this?
Well, if what you want is to focus on the patent and its related work (rather than other authors) then one option could be to focus more on the patent and related descriptions rather than who did it.
Do note that even though you are the last author (and if you did wrote it as FirstAuthor et.al), it is implicit that you were involved in its creation, due to the fact that you are including it on your resume.
Maybe you could go with something like: Worked on the Invention and patent of product Foo, while laboring on company Bar Co. - Jan, 2017 - Jan, 2017
During interviews or other follow ups, you can specify more details if necessary (like authors involved, etc.) if you are willing and able, but you should try to keep you resume as lean as possible so it is easier to read and understand.
Also, make sure you have clearance or authorization to include that information on your resume, so you don't conflict with any clauses or legal terms involved with that specific patent and the company and other authors involved.