Patent No. EP3739604 (titled "Method For Automatically Stacking Sheet-Shaped Goods, In Particular Transformer Core Sheets") was filed by Heinrich Georg Maschinenfabrik on May 15, 2019. The application was issued on Jul 20, 2022.

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 |
|---|---|---|
| LAE LUGHESE ATTREZZATURE PER LELETTROMECCANICA | Apr 19, 2023 | 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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