Google, Facebook get behind Samsung in patent battle with Apple

CNET.com, here. 

Invalid But Infringed? An Analysis of Germany's Bifurcated Patent Litigation System

K. Cremers, F. Gaessler, D. Harhoff, C. Helmers, here.

Patent Imperialism

B. Chao, here. 

Federal Court Rules That Patent Infringement Can Violate Antitrust Laws

Bracewell&Giuliani, here.

Innovation Nation at War (Posner and patents)

Nytimes.com, here. 

Patent wars abuse the system

J. Bessen, here.

Patent Infringement Litigation: Filings on the Rise

Patentlyo.com, here. 

On patent infringement by farmers planting the progeny of genetically altered seeds covered by U.S. patents

MONSANTO COMPANY AND MONSANTO TECHNOLOGY LLC v. VERNON HUGH BOWMAN, United States Court of Appeals for the Federal Circuit, 2010-1068, here. 

US Supreme Court on Induced Infringement in Patent Law

GLOBAL-TECH APPLIANCES, INC., ET AL. v. SEB S. A, May 31 2011, here. 

Microsoft sues Barnes & Noble, Foxconn, Inventec over Android e-readers

ZDNet, here. Complaint here. Read also this Groklaw's post.