Patent No. EP2844955 (titled "Energy-Self-Sufficient Multiturn Rotary Encoder And Method For Determining A Unique Position Of An Encoder Shaft By Means Of The Multiturn Rotary Encoder") was filed by Fritz Kbler on Apr 30, 2013. The application was issued on May 11, 2016.

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 |
|---|---|---|
| FRABA BVHENGSTLER | Feb 9, 2017 | PATENTANWALTE TER SMITTEN EBERLEIN-VAN HOOF RUTTEN PARTNERSCHAFTSGESELLSCHAFT MBB |
| AVAGO SALES PTE | Feb 6, 2017 | KILIAN KILIAN & PARTNER MBB |
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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