Our Services

Patentabilty / Novelty


This search will help you draft claims of appropriate breadth, provide background in a specification, and aid in making a filing decision.

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Freedom-to-Operate / Clearance

Infringement Clearance

With this search, we will review the claims of any potentially relevant and in-force patents and locate public domain references as well.

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State-of-the-Art / Landscape

State-of-the-Art Collection

This search can help you identify and map out roadblocks to bypass or potential minefields to avoid during product development.

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Invalidity / Validity

Validity Searches

With this search, we will attempt to knock out a competitor’s portfolio with our exhaustive worldwide review of patents and literature.

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Our Experience and Expertise

Epsilon’s founder, William Wicker, has been in the field for three decades and is a well-recognized thought leader. He has trained dozens of patent researchers, many of whom have gone on to work as patent lawyers and USPTO examiners. Our researchers average more than twenty years of experience, and all are registered patent agents. We have expertise in an incredibly wide range of technical arts. Try our services today to see why many of our clients have been with us consistently for more than two decades.

Our Location

All of our researchers live and work in the Washington, D.C. area. We can conduct searches on-site at the USPTO Public Search Facility (when open) using the powerful EAST system, the same one that U.S. patent examiners use. Our proximity to the Library of Congress allows us access to one of the nation’s largest repositories of technical literature, and we have the resources of the multiple world-class universities in the region at our disposal. We are always available for face-to-face meetings with clients in the area.

Our Commitment and Integrity

Since 1997 we have been serving the intellectual property community the only way we know how – by doing our very best on every project. Our desire to maintain a long-term relationship with each client transcends any short-term profit motive or gain. This philosophy is clearly reflected in the thoroughness, thoughtfulness, and accuracy of every search we conduct and each report we prepare.