Type of property

Commencement of ownership

Pre-approval by govít

Effect of recording/registration

Preemption of state law

Tangible personalty

Take possession

No

Not possible except for boats, automobiles and airplanes

No

Realty

Delivery of deed or AP

No

Superior claim

No

Trade secret

Crystallization of idea that confers competitive advantage bcs secret

No

Not possible

No

Copyright

Fixation of original expression

No; registration virtually automatic

SMJ in federal court; prima facie validity

Yes

Trademark

Use of distinctive mark in commerce

Yes, except at common law

Establishes federal TM; prima facie validity

No

Patent

Approval by USPTO

Yes

Establishes property interest; prima facie validity

Yes