USPTO Certified Services

Patent File Histories
Keyword searchable and bookmarked.

USPTO Assignment Documents
Assignments, Reel and Frame copies.

USPTO Certification of Documents
Rapid certification, directly with the PTO.

Delivery Options
Convenient options, plus a portal for frequent users

Legalization & Authentication
We legalize and authenticate a wide variety of documents.

IP Search Services
Professional IP and patent searching.

US PTO Assignment Documents – Reel/Frame Copies

DPS always provides the complete assignment chain scanned with details and bookmarked for easy access to pages needed. Our experts can find any assignment recorded.

Patents shall have the attributes of personal property.

Applications for patent, patents, or any interest therein, shall be assignable in law by an instrument in writing. An assignment, grant, or conveyance shall be void as against any subsequent purchaser or mortgagee for valuable consideration, without notice, unless it is recorded in the Patent and Trademark Office within three months from its date or prior to the date of such subsequent purchase or mortgage.

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File History Search

US Format: 5,800,992 90/007961 RE37564

Foreign Format: JP2006/521819 CA2210720 CN1212425

Patent Search

Professional Search

With our extensive PTO experience, we provide high quality professional patent search services. For details, call us at 1-202-999-0222.

You may also want to perform your own search with our new, up to date
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