Patent citations and citation data is available from a number of different sources. But how reliable is this data? Are citation links double counted? What about the effect of family members?
We do this for four case studies, being:
- A granted US patent, filed by a US applicant
- A granted US patent, filed by a non-US applicant
- A patent family without any US family members
- Patent families with US family members, but from the perspective of non-US patents - such as the example shown below