"侵犯专利权者" can be translated into English as "patent infringer" or "those who infringe upon patents".
"Patent infringer" is a direct and concise translation, clearly indicating someone who violates patent rights.
"Those who infringe upon patents" is a more descriptive phrase, specifying the action (infringing upon patents) and the subject (those who do it).
Both expressions are accurate and can be used depending on the context and desired level of formality.