Introduction
This post is based on our experience of working with research
companies. It is written from a patent
attorney’s perspective and therefore only comments on issues that are within the
normal remit of a patent attorney. In
addition this post does not comment on IP rights other then patents. The advice in the circular is generally
applicable to all technology areas.
However the specific examples that are given are from the chemical and
biotech areas reflecting Holly IP’s core areas of expertise.
Reasons to File a Patent Application
Patents protect specific products and activities. Traditionally these would be seen to be products
and activities which a company is selling or is close to selling, and the
patent’s main purpose would be to provide a monopoly in the market which could
be used for commercial gain by the company. However in the case of a research
company where products have not yet been developed, and may in fact be several
years from being developed, the commercial role of patent protection can be
more complicated. Whilst the value of a
company’s patents and patent applications is still tied to future sales of
products, their immediate commercial role might be to increase the value of the
company or make it more attractive to investors.
In addition, the patent applications that are filed by a
company can be viewed by outside observers as an indication of how well its
research is going. Thus regular filings
of patent applications mean the company will tend to be seen in a positive
light.
As well as protecting
one’s own products and activities, patent filings can also be part of a
strategy to deal with competitors. Thus
it can be desirable to have patent cases which can be used as bargaining chips
in negotiations with competitors.
Patent Strategies in Different Areas of Technology
Patent strategies differ in different technology areas. In the mechanical and electronics fields
patents often cover inventions relating to distinct discrete concepts, which
may relate to small developments. In the
chemical and biotech fields inventions can be more nebulous, with the inventive
concept sometimes changing substantially as prior art is found. Chemical and biotech patent cases will often
have broader claims, and sometimes individual patents, for example covering
blockbuster drugs, will be of very high value. A company will need to decide on the most
suitable filing strategy based on its commercial goals and the resources that
are available.
Given the long development times for chemical and biotech products
there it is sometimes seen as an advantage for patent applications to be
pending a long as possible. However in
other areas proceeding to grant as quickly as possible may be desirable.
Patent Portfolios
As a general rule a research company will need to build up a
portfolio of patent cases as its research progresses. The nature of the portfolio will be very
dependent on the number and type of products that need to be protected. For important products it is desirable to
have several layers of patent protection.
This often comes about when there are earlier broad filings (for example
directed to all products with a specific activity) followed by narrower filings
to preferred products (such as products with high activity). Several layers of protection are more likely
to deter third parties from infringing a company’s patent rights and would also
make them more likely to negotiate with a company instead of attempting, for
example, to obtain revocation of the patents.
A large patent portfolio is costly to maintain and therefore
needs to be reviewed regularly to assess whether all the cases are worth
maintaining. In addition there needs to
be an appreciation of which cases in the portfolio are more important, so that
decisions can be made about how much money is spent on each case. For example a case which is considered to be
of little value might only be filed in a few territories and if it was opposed
by a third party the company may decide not to defend it.
With a portfolio that is made up of related cases there also
needs to be an awareness of the possible interaction between cases. For example when patentability arguments are
filed on one case they need to be consistent with those used on other cases. Where an earlier case is relevant prior art
for a later case care must be taken that arguments filed on either case do not
undermine the patentability of the other case.
A view has to be taken on which cases are more important in order to be
able to make decisions on which arguments can be used on which cases.
Weaker Cases
Often patent applications are filed which are known to be ‘weak’,
where the arguments in support of patentability are less convincing and there
is a substantial possibility that the case might not be allowed. Careful thought needs to be given to whether
or not to file such applications. The
main reason to file a weak application is of course that the claims cover
subject matter deemed to be important. Even
though it may not be clear whether or not a weak case will be granted, whilst
it is pending it will act as a deterrent to third parties. Given that there is a degree of unpredictably
in examination of patent applications a third party will need to consider the
risk of the case being granted with claims that will be relevant to their
activities.
One disadvantage of filing a weak application is that
examination is likely to be more complex and therefore more costly. Whilst this can be managed to an extent, a
company may feel that the same resources would be better spent on other
cases.
In addition, whilst the rational and justification for
filing a weak application can be clear to the patent department, it can
sometimes be a complex task to explain this to other people in the
company. It can lead to confusion
amongst the scientists and business people, and they may find it difficult to
assess weak cases and to make decisions based on them.
Invention Spotting/Harvesting
In the course of research scientists often use non-conventional
approaches, develop new protocols , optimise existing protocols and produce a
lot of different types of data. They
will see most of these things as routine and might not realise that some it
could relate to patentable subject matter. For example a scientist testing a
particular vaccine adjuvant might find that it has the effect of stabilising
proteins in the same solution. Whilst
the company may be working to identify effective adjuvants for vaccination, it
may possible to obtain claims to the adjuvant compositions based the
stabilising properties instead. A patent
department will therefore need to consider how best to review all the research
that done and whether or not to file on developments which are not part of the
core research.
It should be borne in mind that patents are granted for what
might be termed ‘modest inventions’.
Optimisation of a method can lead to patentable subject matter,
particularly if more than one parameter is being changed (i.e. if optimisation requires
at least a 2 dimensional walk). In
general any sort of selection of preferred compounds or parameters could lead
to patentable subject matter.
In biological situations the finding of synergistic
interactions can lead to patentable subject matter. For example it might be found that when
certain compounds are administered together they lead to a synergistic
effect. For certain activities, such as
administration of a drug to treat a condition, several layers of patent
protection might be possible. If it is
found that the drug works best at a certain dosage, with certain carriers,
using a particular administration route in a specific patient sub-group, then
patent protection may be available for some of these findings or for
combinations of these features.
‘Modest’ inventions
might however only lead to allow narrow claims and therefore before filing on
such inventions a company needs to make sure that claims that could be obtained
would be useful.
What to Claim
When filing most patent applications a company should have
good idea of the claims that are likely to be granted. Such claims should ideally be broad and of
course cover subject matter of commercial importance. The claims should be also be capable of being
enforced. Certain claim types, such as
screening claims, cover activities that could be done privately and so
infringement could be difficult to detect.
In general product claims are considered desirable because they are easier
to enforce. Therefore when drafting a
patent application consideration should be given to all possible product claims, including claims to intermediates. In biotech cases kit claims should also be
carefully considered.
Often companies do not consider all the different types of
claims that are possible from a given research finding. For example the finding of the genetic
mutation that causes a particular disease condition could lead to diagnostic,
therapeutic, screening, polynucleotide and kit claims.
When drafting the claims consideration also needs to be
given to the work the scientists are planning to do in the priority year, and
whether that needs to be foreshadowed in any way.
Sometimes a company is faced with the choice of filing a
single broad case versus filing multiple narrow cases to cover certain subject
matter (for example if the scientists have discovered several related
proteins). Whilst it is cheaper to file
a single broad case there are advantages in filing multiple narrow cases,
particularly if the prior art is close.
Filing multiple narrow cases will give flexibility in drafting the cases
and allow different patentability arguments to be used for the different
subject matter.
If a company thinks it is likely that a patent will be
opposed or be litigated then it obviously needs make sure that the claims that
are granted will be defensible when attacked by a third party. It may therefore decide, for example, to be
less ambitious in the breadth of claims that are granted.
Sequence of Filings and Publications
A company will normally be filing a series of related
cases. It must be remembered that the
earlier cases will be prior art against later cases. Therefore when each case is filed its
contents need to be reviewed to ensure that there will be minimal prior art
impact on later cases. It is clearly an
advantage to file later cases before the earlier cases publish if that is
possible. Therefore a company needs to
be aware of the dates on which its patent applications will publish and review
whether any new patent applications need to be filed before then. Clearly any other disclosures (such as
publications by the scientists) should also be treated in a similar manner.
Prior art and Competitor Activity
A company will need to stay aware of relevant public disclosures
by third parties, including of course the publication of third party patent
applications and patents. Such
disclosures will of course be relevant to patentability of future patent
application. Third party patent
applications and patents will need to be reviewed to assess their impact on
freedom to operate. The progress of
relevant third party patent cases should be followed and decisions will need to
be taken on whether to file interventions, oppositions or revocation actions.
Grace Periods for Inventor Disclosures
In the situation where it is found that the scientists have already
published (or disclosed in another way) part or all of the invention grace
periods are available in many territories to nullify the prior art effect of a disclosure
by the inventors. In particular, the US,
normally the most important territory, has a one year grace period for inventor
disclosures. The grace period may be shorter
in other territories. However if grace
periods are going to be utilised then care has to be taken to ensure that all
conditions are met for use of the grace period.
For example in certain territories the PCT route is no longer be
available if the grace period is going to be used. Use of grace periods will however increase
costs.
Good House Keeping
All patent applications should be filed as soon as possible
to obtain the earliest priority date. Preferably patent application should be
filed before any discussions with potential collaborators and commercial
parties occur, even though these discussions will be confidential. Invention records need to be kept documenting
the contribution of all relevant people and detailing how inventorship was
decided. All situations where ownership
of an invention could possibly be disputed need to handled very carefully.
Abandoning a Patent Application
Patent protection is expensive and the costs escalate as the
case progresses. The end of the priority
year (at 12 months) and the end of the international phase (at 30 months) are
appropriate time points to consider whether or not the application should be
abandoned. Proceeding beyond the
international phase is normally expensive.