Hi eugenewright and welcome,
The short answer is yes, a weave using specific colours of weft and warp and made to a specific pattern can be subject to copyright. The best case which exemplifies this is known as
Abraham Moon & Sons Ltd v Thornber. There is a more recent case, from 2020, which covers many of the same issues, albeit it wasn't concerned with tweed fabric. It is known as
Response Clothing vs Edinburgh Woolen Mill. If you have time, it would be worth reading both judgments to see how the court analysed the facts in each case in order to come to its decision.
Furthermore, the appearance of a fabric, either applied onto it by printing etc or integral to it by virtue of its weave, can be registered as a design. For example, this is the method used to protect many traditional tartans and tweeds, where a claim to copyright might be dubious (see an example of a registered design for a
tartan here and a
tweed here).
The main differences between the protection and characteristics of copyright and design right are as follows. Copyright comes into being at the moment the work is created, provided that it is original. It then lasts for the lifetime of its creator plus 70 years after his/her death. Copyright can still be infringed by using the protected attribute in an entirely different medium, and even converting a 2 dimensional work into an 3 dimensional one (as you are effectively doing) can be infringement (see
section 17(3) of the Copyright Designs and Patents Act 1988). Infringement of copyright is a matter of strict liability, that is to say, once the court is satisfied that the work is subject to copyright (for instance, by meeting the originality test) it is then up to the defendant to prove that he had a legal excuse for copying the work without permission. Ignorance that copyright existed is not enough. On the other hand, design right has to be registered and only lasts for up to 25 years, provided that the owner re-registers the design at the appropriate time. Design right only prevents another person from manufacturing something which has the same shape, configuration or surface decoration/appearance, or is so closely similar to the registered design that a person familar with such products would think that they were the same. You might be able, for instance, to take a sample of surface decoration from a registered design and apply it to an entirely different object without infringing the original design right - subject to establishing the classes of goods for which the design is registered.
So you now need to establish if the tweed you would like to use is sufficiently original to be subject to copyright, and also to see if its appearance is protected by design right. 'Original' in this context has a narrow meaning. It means that the work (here a work of artistic craftsmanship) must have been created by the mind of a human and not copied from an earlier source. In reality, it's a fairly low threshold. Originality is one of the reasons that some traditional tartans cannot be adequately protected by copyright today since the identity of their creator or creators is unknown and it can be safely assumed that they died well over 70 years ago. But of course there are many modern tartans, tweeds and other plaid patterns which will meet the originality test.
Your research needs to be carried out diligently and is essential, as certain tweed manufacturers, notably the
Harris Tweed Authority take active measures to protect their products and brands.You can read more about the historical background to this
here.
I hope this answers your question.