The principle focus of this report is to create a somewhat focused patent landscape around the pulse oximetry intellectual property domain. The domain collection for this report was created by matching the phrase "pulse oximetry" in the title, abstract, or claims (but not in the description section) of the patent documents available in Google’s BigQuery data warehouse in the patents.publications dataset. Matching this phrase in any of the specified sections will include that patent document in the domain collection. Limiting the query to the title, abstract, and claims, and not also searching the description section, is intended to narrow the search to better identify patent documents with inventions that focused on pulse oximetry technology, and not include documents that mention that phrase simply as part of some background or overview explanation included in the patent document description section. The patent documents query was executed on a worldwide basis across all US and international patent documents contained in Google’s dataset.