PersonalWeb Technologies LLC v. Facebook Inc.

Background

PersonalWeb Technologies LLC asserted three patents—the ’310, ’280, and ’662 patents—against defendants including Facebook Inc., Google LLC, EMC Corporation, and others. The patents concerned using identifiers generated from the contents of data, often through a hash function, to manage data in computer networks. The claimed functions included controlling access to data, retrieving data from network servers, and identifying duplicate data so that a copy could be deleted.

The defendants moved for judgment on the pleadings under Federal Rule of Civil Procedure 12(c). That motion asks whether the pleadings show that the moving party is entitled to judgment as a matter of law. The defendants argued that the asserted patent claims were invalid under 35 U.S.C. § 101 because they covered abstract ideas rather than patent-eligible inventions. PersonalWeb argued that the claims described a specific improvement in data management and were not abstract.

Conversion to Summary Judgment

PersonalWeb asked the court to treat the motion as one for summary judgment so the court could consider a declaration from its expert, Dr. Samuel Russ. The court declined. It concluded that only the nonmoving party had submitted evidence outside the materials properly considered on the pleadings, and that the defendants had not received notice that the motion would be converted. The court denied PersonalWeb’s request for conversion and did not use Dr. Russ’s declaration.

Patent-Eligibility Framework

The court applied the two-step framework from Alice Corp. v. CLS Bank International and related Supreme Court decisions. First, a court asks whether the claims are directed to an abstract idea, a law of nature, or a natural phenomenon. If so, the court asks whether the claim’s elements, considered individually and together, contain an “inventive concept”—something beyond applying the abstract idea through routine and conventional activity.

Step One: Abstract Idea

The court characterized the patents as follows:

- The ’310 patent used content-based identifiers to control access to data. - The ’280 patent retrieved and delivered copies of data across a network of servers. - The ’662 patent identified duplicate data using content-based identifiers and deleted one copy.

The court concluded that all three patents were directed to the same abstract three-step process: generating or using a content-based identifier through a hash or message-digest function, comparing that identifier with another value or identifier, and then allowing access, denying access, or deleting data. In the court’s view, collecting, comparing, and accessing information are abstract concepts.

The court rejected PersonalWeb’s argument that the patents claimed a specific improvement in computer technology. It reasoned that the patents did not claim a new way to generate the content-based identifiers, and instead claimed applying a known hashing technique to general data-management operations. The court also noted that the patents had been asserted across different technologies, which it viewed as evidence that they were directed to general data management rather than a specific improvement in computer functionality.

Step Two: Inventive Concept

The court next considered whether the claims included an inventive concept that transformed the abstract idea into patent-eligible subject matter. It concluded that they did not. The court found that hash identifiers, comparisons, access restrictions, duplicate detection, processors, and computer networks were generic, routine, and conventional components or functions. Using those components to perform the claimed data-management tasks did not add enough to make the claims patent eligible.

Disposition

The court granted defendants’ motion for judgment on the pleadings and held the asserted claims of the ’310, ’280, and ’662 patents invalid for failing to satisfy 35 U.S.C. § 101. The court stated that amendment would be futile and that leave to amend would be denied; it also noted that PersonalWeb had not requested leave to amend. The clerk was directed to close the file, and judgment in favor of the defendants was to follow. The judge’s name is not legible in the supplied opinion text, so this summary identifies the decision-maker only as the court.