The three-judge panel backed a district court judge’s interpretation of a key patent term and decision to exclude “unathenticated, undated screenshots” that Mirror Worlds said were wrongly kept out.
Mirror Worlds Technologies LLC alleged in a 2017 suit that “backend” computer systems supporting Facebook’s news feed, timeline, and activity log features infringed its US Patent Nos. 6,006,227, 7,865,538, and 8,255,439. Judge John G. Koeltl of the US District Court for the ...
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