USPTO Patent Assignment Data Feed Down for Nearly 60 Days, Disrupting IP Transactions Globally

The USPTO’s patent assignment data feed has been unavailable for approximately 60 days as of April 7, 2026, according to IAM (Intellectual Asset Management). The outage has left practitioners and market participants unable to access current patent ownership records, creating significant disruption across the IP transactions, licensing, and analytics sectors. The disruption illustrates how deeply reliant the global IP market has become on USPTO-provided data infrastructure.

The USPTO’s assignment database records transfers of patent ownership, security interests, licensing agreements, and related IP transactions. These records are foundational for patent due diligence, portfolio valuation, M&A, and licensing negotiations. While the USPTO’s public assignment search tool remains operational for individual queries, the bulk data feed—used by third-party data providers, analytics platforms, and IP practitioners for systematic analysis—has reportedly been unavailable since approximately early February 2026.

Organizations reported to be directly affected include Allied Security Trust, a patent pool and IP transaction advisory firm, and Clarivate, which operates the Derwent Innovation patent database and related services used widely in the IP industry. Both organizations rely on timely USPTO assignment data to provide accurate patent ownership information to clients. The IAM report describes the market as effectively “flying blind” on patent ownership changes—meaning any assignment recorded since roughly early February 2026 is invisible to those dependent on the data feed.

The practical consequences are severe. Patent buyers and sellers cannot independently verify current ownership chains without resorting to manual USPTO searches, which are slower, less systematic, and not amenable to bulk processing. Lenders accepting patents as collateral face uncertainty about whether the assigned patent rights are accurately reflected in due diligence reports. IP analytics providers—whose products track patent portfolio changes, technology flows, and competitive positioning—cannot update their databases accurately. For a market where billions of dollars in patent transactions occur annually, even a brief data outage creates significant operational risk; a 60-day blackout is a systemic failure.

The USPTO has not publicly disclosed an explanation or expected resolution timeline based on information available to IAM at time of publication. The agency has been undertaking significant IT modernization efforts in recent years, and data feed outages may be a side effect of infrastructure transitions. Whatever the cause, the duration of the outage—approaching two months—is substantially longer than routine maintenance windows and raises questions about the USPTO’s obligations to the IP ecosystem that depends on its data.

This incident highlights the structural vulnerability of an IP market that relies heavily on a single government data source. Many private services are built directly on top of USPTO bulk data feeds, meaning that any disruption to those feeds propagates instantly across the ecosystem. A broader conversation about data infrastructure resilience, redundancy, and service level commitments from the USPTO appears warranted.