Patent File Histories
Keyword searchable and bookmarked.
Non-Patent Literature
Nicely tabbed NPL.
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
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Legalization & Authentication
We legalize and authenticate a wide variety of documents.
IP Search Services
Professional IP and patent searching.
DPS provides the fastest certification services in the industry. Our certification specialists coordinate directly with the PTO staff and submit every request with detail and accuracy to avoid any delay requests.
Regular fee is $160 per document.
Add rush service fee $285 per document certified (2 - 3 Days)
Obtaining large files and NPL that are difficult to obtain from PAIR
We provide all patent-related documents, including:
U.S Patent File Histories
Non-US Patent File Histories
Assignments with Reel/Frame copies
Non-Patent Literature (NPL)
PTO Certification of Documents
Legalization & Authentication
Our office is located directly next door to the USPTO document copy room ensuring you that we have quick access to documents.
We understand the need for complete privacy when dealing with your documents and requests. We are careful to treat all your requests with diligence and absolute confidentiality. To learn more, please review our privacy and security statement.
Our physical office hours are Monday to Friday 8:00am EST to 8:00pm EST. Call us Toll-Free at 1-202-999-0222 for orders or questions, or visit our Contact page.
Search Our Current Collection of File Histories
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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 -
Try it Here