Definition
The filing date is the date the patent office receives a complete application, and it serves as a key reference point for deadlines and prior art.
Why It Matters Legally
The filing date establishes the applicant’s place in line and sets the clock for the patent term and many deadlines. Even a one-day difference can determine priority between competing inventors.
Example Use Case
Two inventors file similar applications days apart, and the earlier filing date gives one inventor priority over the other.
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Related Terms
Priority Date, Patent Application, Patent Term, Provisional Application, Patent Pending