Semrock Patents Confirmed Following Reexamination

ROCHESTER, N.Y. - The U.S. Patent and Trademark Office (USPTO) has confirmed the validity of four key Semrock patents that were subject to a series of reexamination requests. This rigorous review bolsters the intellectual property of Semrock, Inc., and reconfirms Semrock's patent rights to classes of edge filters, laser-line filters, notch filters, and broadband mirrors.

Approximately one year ago, attorneys for a third-party filed reexamination requests challenging the validity of Semrock patents covering classes of its RazorEdge® filters and its MaxLine® laser-line clean-up filters for Raman spectroscopy, its StopLine® deep notch filters for fluorescence, Raman, and other laser applications, and its MaxMirror® ultrabroadband laser mirrors*.

Following analysis of the material submitted by the third-party and Semrock, the USPTO has confirmed the validity of all of the patent claims identified in the reexam requests, thereby confirming-under rigorous review-the intellectual property utilized by Semrock as a technology leader in optical filters. Semrock has already been awarded reexamination certificates for two of the patents by the USPTO, and notices of "Intent to Issue Ex Parte Reexamination Certificates" for the remaining two patents, dated December 16, 2010, have been issued as well.

Semrock's industry-leading and proprietary hard-coated optical filter manufacturing processes ensure permanent performance with "no burn-out" even under the most intense illumination conditions. Semrock filters are available from stock for same-day shipment with a 30-day no-hassle return policy and are covered under the company's five-year warranty. Custom-sized filters are available in under a week.

* US Patent Nos. 7,068,430, 7,119,960, 7,123,416, and 6,894,838, respectively.


Semrock, Inc., a Unit of IDEX Corporation, manufactures optical filters that set the standard in performance and reliability for the biotech and analytical instrumentation industries, as well as innovative optical filters for more general laser and optical systems applications. All Semrock optical filters are made with hard ion-beam-sputtered optical coatings. OEM filters are manufactured in volume. End-users benefit from a wide selection of standard catalog products that ship from stock. Semrock's patented and patent-pending products include its highly acclaimed BrightLine® fluorescence filters, state-of-the-art filters for Raman spectroscopy, and other unique filters for laser and optical systems. Semrock's innovative filters, made possible by combining modern ion-beam sputtering with Semrock's proprietary volume manufacturing technology, are covered under a five-year warranty.

Founded in September 2000, Semrock is based in Rochester, New York, a well-known center of optics, and has sales offices throughout the United States. In October 2008 Semrock became a Unit of IDEX Corporation. For additional information about Semrock, its products, and its team of international distributors, visit the company website at


Amanda Valek-MacDonald

Semrock, a Unit of IDEX Corporation


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