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Federal Circuit Vacates in Part, Affirms in Part PTAB Ruling in Cisco IPR

Published

27 August 2026

Topic

regulatory

Sectors

Enterprise Software

Geography

United States

Source

Read at ipwatchdog.com

Verified

Fusion42 · 27 August 2026 · Fusion42 review

The U.S. Federal Circuit partially vacated and partially affirmed a PTAB decision on an inter partes review involving Cisco and Zilkr Cloud Technologies, remanding for further proceedings on claim construction issues related to service activation in a unified communication platform patent.

This Wire brief sits within Fusion42's coverage of Enterprise Software.

◆ The Wire takeaway

You must revisit claims involving service activation wording in patents if you operate unified communications tech. The Federal Circuit’s narrower interpretation opens a door to challenge existing obviousness arguments tighter than before.

Coverage

1 source · 27 Aug 2026

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Topics

Enterprise Softwarepatent-litigationip-reviewfederal-circuitciscoptab