Charles J. Sirek
Firm Name:
Firm Number:
414-841-3795
Registration Number:
79,806
Available Cases:
0
Prosecution Experience - By US Class
| Class Number | Total Cases |
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US Case List ?
| Serial Number | Class/Subclass | Invention Title | Ownership History ? | Contribution ? |
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Ownership Table
- This table shows companies that have had an ownership interest in the patent records in our database for this patent agent
- The companies listed here are not necessarily clients of this attorney. Patent ownership may change during the life of any patent. As an example, an agent may file a patent on behalf of Company A, but after the patent issues the patent may be sold to Company B. As a result, both Company A and Company B will appear in this table, but only Company A was a true client of the attorney.
Understanding this Search Tool
- It is important to understand several limitations of this search tool:
- Associations between cases and attorneys/agents in our database are made, in part, using Optical Character Recognition (OCR) processing of image-based patent records. OCR is not perfect, so some cases may be missassociated.
- This search is based on information derived from a sampling of patent file wrapper records. That means that attorney profiles are not complete. Some will be more complete than others.
- Please note that our profiles are built from a blend of publicly available data sources.
- What does this mean?
- You should not make direct comparisons between attorneys/agents in this database.
- This search tool should only be used to help you identify attorneys/agents that have experience in a certain technology area, with a certain prosecution topic or that may have experience working with specific companies. It can also help you find an attorney in a certain geographical area.
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