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- Research prior art (state of the art): What already exists? Cite literature.
- Identify drawbacks: For each known solution – what does not work? What is missing?
Known solution
Solarzellen auf Siliziumbasis zur Stromerzeugung
Drawbacks
Efficiency losses at high temperatures; limited energy yield with diffuse light; complex manufacturing; limited module flexibility.
Known solution
MRI examination with contrast agent for tumour diagnosis
Drawbacks
Time-consuming; high costs; contrast agent not suitable for all patients; limited availability; burden for patients with claustrophobia.
Known solution
Blood glucose measurement by finger prick (test strips + glucose oxidase)
Drawbacks
Invasive, painful; consumables; no continuous monitoring; gaps between measurements.
Known solution
Chemical water treatment with chlorine
Drawbacks
Formation of unwanted by-products; taste and odour impairment; limited effectiveness against certain microorganisms; storage and transport of hazardous chemicals required.
Conclusion: The list does not need to be complete, but it helps us if you share what is already known.
Apply to your invention: Which 2–3 existing solutions do you know? What drawback does each have?
Note 2–3 known solutions and one drawback for each.
Tip
Not too detailed. Focus on the relevant solutions and their drawbacks. In the end it should be clear: something is missing here – and your invention fills that gap.