Patent No. EP2533933 (titled "System For Welding With An Embedded Database; Methods Of Controlling Such Welding System, Of Montoring Such Welding; Embedded Database") was filed by Illinois Tool Works on Feb 11, 2011. The application was issued on May 31, 2017.

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
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