Patent No. EP3574774 (titled "Heated Aerosol Generating Article With Thermal Spreading Wrap") was filed by Philip Morris on Dec 4, 2014. The application was issued on Nov 18, 2020.

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 |
|---|---|---|
| JAPAN TOBACCO | Aug 17, 2021 | BANDPAY & GREUTER |
| NICOVENTURES | Nov 20, 2020 | GREY |
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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