Patent No. EP3475531 (titled "Methods For Repairing Airfoil Trailing Edges To Include Ejection Slots Therein") was filed by General Electric on Jun 14, 2017. The application was issued on May 26, 2021.

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.
| Company | Opposition Date | Representative |
|---|---|---|
| ANSALDO ENERGIA SWITZERLAND | Feb 25, 2022 | STUDIO TORTA |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
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