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Cisco holds 5,000 patents worldwide and has 7,000 more in applications, Noh said. Members of the intellectual property group oversee those filings and also work on litigation. The company is also a member of the Coalition for Patent Fairness, a lobbying group whose members include dozens of the nation’s largest technology companies. The group paid law firm Patton Boggs $500,000 in 2007 to lobby for patent reform, the Associated Press reported Monday.

However, patent attorneys who regularly read the blog say Frenkel’s credibility is unaffected by his job.

“I don’t think there was any doubt which side he was on anyway,” Bloch said.

Reines agrees: “It provides very reliable and prompt information about what’s going on in patent litigation.”