Intellectual Ventures accused NettApp’s MetroCluster Fabric Attached systems of infringing U.S. Patent No. 6,516,442, which covers aspects of symmetric multi-processor types of computer architecture by which multiple processors share a common operating system and memory. Each asserted claim required certain components of the system to “perform error correction of the data in the packets exchanged over the channels.” NettApp asserted that the MetroCluster products, which allow for continuous back-up of data to separate locations, do not satisfy this “error correction” limitation, as the term had been construed. Judge Saris granted NettApp’s motion for summary judgment of non-infringement. She had construed the term to mean “correcting errors in data by at least reconstructing erroneous data,” rejecting Intellectual Ventures proposal that the term be construed broadly enough to encompass the correction of errors using a retry request. The MetroCluster systems break down data packets into sub-packets, to which an error detection code is appended. The system discards data in which an error is detected and then retransmits the data. Once the correct data has been received, the system puts the sub-packets back together into a complete packet. Intellectual Ventures asserts that this re-assembly of the sub-packets into full packets satisfies the “reconstruction” aspect of the limitation; Judge Saris disagreed, however, finding that her construction of the “error correction” limitation unambiguously excluded a system that exclusively addressed errors through a retry procedure. She also noted that the reassembly process utilized by the MetroCluster systems was not a part of handling errors, as such reassembly occurs whether an error is detected or not.