Is there any patent or copyright that would prevent someone from replicating the Tandy TRS-80 model 100 notebook computer for instance putting a raspberry pi inside of it and then selling it. It has been a very long time since this product was on the market... Over 20 years.

Example http://arstechnica.com/information-technology/2015/08/surfing-the-internet-from-my-trs-80-model-100/

Are there any patents that would prevent someone from replicating the Tandy TRS-80 model 100 notebook computer, for instance putting a raspberry pi inside of it and then selling it?

It has been over 20 years since this product was on the market.

Here is an example of someone doing something similar: http://arstechnica.com/information-technology/2015/08/surfing-the-internet-from-my-trs-80-model-100/

Is there any patent or copyright that would prevent someone from replicating the Tandy TRS-80 model 100 notebook computer for instance putting a raspberry pi inside of it and then selling it. It has been a very long time since this product was on the market... Example http://arstechnica.com/information-technology/2015/08/surfing-the-internet-from-my-trs-80-model-100/

Is there any patent or copyright that would prevent someone from replicating the Tandy TRS-80 model 100 notebook computer for instance putting a raspberry pi inside of it and then selling it. It has been a very long time since this product was on the market... Over 20 years.

Example http://arstechnica.com/information-technology/2015/08/surfing-the-internet-from-my-trs-80-model-100/