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Judge Robinson Finds Digital File Patents Claim Ineligible Subject Matter Under Section 101

Judge Sue Robinson has invalidated U.S. Patent Nos. 5,862,321 and 6,144,997, which relate to digital file identification and had been asserted against Amazon and Barnes & Noble, as claiming abstract ideas under Section 101 and Alice Corp. Cloud Stachel, LLC v. Amazon.com, Inc., et al., C.A. No. 13-941-SLR, 13-942-SLR, Memo. Op. at 19 (D. Del. Dec. 18, 2014).

The patents claimed a system for transferring location information for documents, allowing users to access files without being limited by the memory available on the device they are using. Judge Robinson held that this was an abstract idea, accepting the defendants’ characterization of the claimed inventions as similar to cataloging documents to aid retrieval of the documents, which had existed for “[n]early two millennia.” Id. at 13-14. Turning to whether there were sufficient limitations on the abstract idea, Judge Robinson found that there were not, accepting the defendants’ argument that any limitation present was essentially a conventional computer component or process that operates similarly to a book of call numbers in a library. Id. at 14-18. Accordingly, Judge Robinson concluded that “[a]llowing the asserted claims to survive would curb any innovation related to computerized cataloguing of documents to facilitate their retrieval from storage, which would monopolize the ‘abstract idea.’” Id. at 18.

Judge Robinson also explained that a claim construction decision was not necessary for her finding of Section 101 invalidity, because she would have reached the same conclusion even if she had adopted all of the plaintiff’s proposed constructions. Id. at 1 n.2.

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