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.

Contact Us

We provide all patent-related document services. Please contact us for information regarding services not shown on this website.

Digital Patent Services Corp.
1411 Washington Dr
Stafford, VA 22554

Toll-Free: 202-999-0222

Send orders and files to EMAIL orders@dpsfiles.com
For questions or follow-up, you can call us at 202-999-0222.
We always confirm receipt of your documents via email.

Search Collection

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
US Pat Search System –
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